Add 'ignore_paths' config option

make dependencies

.gitignore

@@ -0,0 +1,5 @@
+# IDE Directories
+.idea
+
+# Build directory
+build

LICENSE

@@ -1,674 +1,21 @@
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-  16. Limitation of Liability.
-
-  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
-THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
-GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
-USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
-DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
-PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
-EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGES.
-
-  17. Interpretation of Sections 15 and 16.
-
-  If the disclaimer of warranty and limitation of liability provided
-above cannot be given local legal effect according to their terms,
-reviewing courts shall apply local law that most closely approximates
-an absolute waiver of all civil liability in connection with the
-Program, unless a warranty or assumption of liability accompanies a
-copy of the Program in return for a fee.
-
-                     END OF TERMS AND CONDITIONS
-
-            How to Apply These Terms to Your New Programs
-
-  If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
-
-  To do so, attach the following notices to the program.  It is safest
-to attach them to the start of each source file to most effectively
-state the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
-    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) 2024  CapCreeperGR
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-Also add information on how to contact you by electronic and paper mail.
-
-  If the program does terminal interaction, make it output a short
-notice like this when it starts in an interactive mode:
-
-    <program>  Copyright (C) 2024  CapCreeperGR
-    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
-    This is free software, and you are welcome to redistribute it
-    under certain conditions; type `show c' for details.
-
-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, your program's commands
-might be different; for a GUI interface, you would use an "about box".
-
-  You should also get your employer (if you work as a programmer) or school,
-if any, to sign a "copyright disclaimer" for the program, if necessary.
-For more information on this, and how to apply and follow the GNU GPL, see
-<https://www.gnu.org/licenses/>.
-
-  The GNU General Public License does not permit incorporating your program
-into proprietary programs.  If your program is a subroutine library, you
-may consider it more useful to permit linking proprietary applications with
-the library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.  But first, please read
-<https://www.gnu.org/licenses/why-not-lgpl.html>.
+MIT License
+
+Copyright (c) 2024 EnumDev
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Makefile

@@ -0,0 +1,41 @@
+# Installation paths
+PREFIX ?= /usr/local
+SBINDIR ?= $(PREFIX)/sbin
+SYSCONFDIR := $(PREFIX)/etc
+
+# Compilers and tools
+GO ?= go
+
+# Build-time variables
+VERSION ?= $(shell git describe --tags --dirty)
+ROOT_COMPILATION_UID ?= 65534
+ROOT_COMPILATION_GID ?= 65534
+
+build:
+	mkdir -p build
+	cd src/bpm; $(GO) build $(GOFLAGS) -ldflags "-w -X 'main.BpmVersion=$(VERSION)' -X 'github.com/EnumeratedDev/bpm/src/bpmlib.rootCompilationUID=$(ROOT_COMPILATION_UID)' -X 'github.com/EnumeratedDev/bpm/src/bpmlib.rootCompilationGID=$(ROOT_COMPILATION_GID)'" -o ../../build/bpm bpm
+
+install: build/bpm config/
+	# Create directory
+	install -dm755 $(DESTDIR)$(SBINDIR)
+
+	# Install binary
+	install -Dm755 build/bpm $(DESTDIR)$(SBINDIR)/bpm
+
+install-config:
+	# Create directory
+	install -dm755 $(DESTDIR)$(SYSCONFDIR)
+
+	# Install files
+	install -Dm644 config/bpm.conf $(DESTDIR)$(SYSCONFDIR)/bpm.conf
+	install -Dm644 config/bpm-compilation.conf $(DESTDIR)$(SYSCONFDIR)/bpm-compilation.conf
+
+uninstall:
+	-rm -f $(DESTDIR)$(SBINDIR)/bpm
+	-rm -f $(DESTDIR)$(SYSCONFDIR)/bpm.conf
+	-rm -f $(DESTDIR)$(SYSCONFDIR)/bpm-compilation.conf
+
+clean:
+	rm -r build/
+
+.PHONY: build install install-config uninstall clean

README.md

@@ -1,29 +1,26 @@
 # Bubble Package Manager (BPM)
-## _A simple package manager_
-
-BPM is a simple package manager for Linux systems
+## _The official package manager for Tide Linux_
 
 ## Features
 - Simple to use subcommands
-- Can install binary and source packages
-- Can be easily installed on practically any system
-- No bloat
+- Can install both binary and source packages
 
 ## Information
-
-BPM is still in very early development. It should not be installed on any system you use seriously. I recommend trying this out in a VM or container. In addition to this, this is one of the first projects I have made using the go programming language so code quality may not be the best. This project was made to help me learn go and how linux systems work better. It is not meant to replace the big package managers in any way
+BPM is still in very early development. There may be bugs that could completely break installations. For now it is recommended you use this only in Virtual Machines, containers or in a Tide Linux installation
 
 ## Build from source
 
-BPM requires go 1.22 or above to be built properly
-
+- Download `go` from your package manager or from the go website
+- Download `make` from your package manager
+- Run the following command to compile the project. You may need to set the `GO` environment variable if your Go installation is not in your PATH
 ```sh
-git clone https://gitlab.com/bubble-package-manager/bpm.git
-cd bpm
-mkdir build
-go build -o ./build/bpm capcreepergr.me/bpm
+make
+```
+- Run the following command to install BPM into your system. You may also append a DESTDIR variable at the end of this line if you wish to install in a different location
+```sh
+make install PREFIX=/usr SYSCONFDIR=/etc
+make install-config PREFIX=/usr SYSCONFDIR=/etc
 ```
-You are now able to copy the executable in the ./build directory in a VM or container's /usr/bin/ directory
 
 ## How to use
 
@@ -31,64 +28,38 @@ You are able to install bpm packages by typing the following:
 ```sh
 bpm install /path/to/package.bpm
 ```
-You may also use the -y flag as shown below to bypass the installation confirmation prompt
+You can also use the package name directly if using databases
+```sh
+bpm install package_name
+```
+The -y flag may be used as shown below to bypass the confirmation prompt
 ```sh
 bpm install -y /path/to/package.bpm
 ```
-Flags must strictly be typed before the first package path otherwise they'll be read as package locations themselves
+Flags must strictly be typed before the first package path or name, otherwise they'll be read as package locations themselves
 
 You can remove an installed package by typing the following
 ```sh
 bpm remove package_name
 ```
-The -y flag applies here as well if you wish to skip the removal confirmation prompt
+
+To remove all unused dependencies and clean cached files try using the cleanup command
+```sh
+bpm cleanup
+```
+
+If using databases, all packages can be updated using this simple command
+```sh
+bpm update
+```
 
 For information on the rest of the commands simply use the help command or pass in no arguments at all
-```
+```sh
 bpm help
 ```
 
 ## Package Creation
 
-Creating a package for BPM is simple
+Package creation is simplified using the bpm-utils package which contains helper scripts for creating packages
 
-To create a package you need to
-1) Create a working directory
-```
-mkdir my_bpm_package
-```
-2) Create a pkg.info file following this format (You can find examples in the test_packages directory)
-```
-name: my_package
-description: My package's description
-version: 1.0
-architecture: x86_64
-type: <binary/source>
-depends: dependency1,dependency2
-make_depends: make_depend1,make_depend2
-```
-depends and make depends are optional fields, you may skip them if you'd like
-### Binary Packages
-3) If you are making a binary package, simply create a 'files' directory
-```
-mkdir files
-```
-4) Copy all your binaries along with the directories they reside in (i.e files/usr/bin/my_binary)
-5) Either copy the bpm-create script from the bpm-utils test package into your /usr/local/bin directory or install the bpm-utils.bpm package
-6) Run the following
-```
-bpm-create <filename_without_extension>
-```
-7) It's done! You now hopefully have a working BPM package!
-### Source Packages
-3) If you are making a source package, you need to create a 'source.sh' file
-```
-touch source.sh
-```
-4) You are able to run bash code in this file. BPM will extract this file in a directory under /tmp and it will be ran there
-5) Your goal is to download your program's source code with either git, wget, curl, etc. and put the binaries under a folder called 'output' in the root of the temp directory. There is a simple example script with helpful comments in the htop-src test package
-6) As of this moment there is no script to automate package compression like for binary packages. You will need to create the archive manually
-```
-tar -czvf my_package-src.bpm pkg.info source.sh
-```
-7) That's it! Your source package should now be compiling correctly!
+Learn more here: https://git.enumerated.dev/bubble-package-manager/bpm-utils

bpm_utils/general_utils.go

@@ -1,41 +0,0 @@
-package bpm_utils
-
-import (
-	"os/exec"
-	"strings"
-)
-
-func GetArch() string {
-	output, err := exec.Command("/usr/bin/uname", "-m").Output()
-	if err != nil {
-		return ""
-	}
-	return strings.TrimSpace(string(output))
-}
-
-func stringSliceRemove(s []string, r string) []string {
-	for i, v := range s {
-		if v == r {
-			return append(s[:i], s[i+1:]...)
-		}
-	}
-	return s
-}
-
-func stringSliceRemoveEmpty(s []string) []string {
-	var r []string
-	for _, str := range s {
-		if str != "" {
-			r = append(r, str)
-		}
-	}
-	return r
-}
-
-func byteArrayToString(bs []byte) string {
-	b := make([]byte, len(bs))
-	for i, v := range bs {
-		b[i] = v
-	}
-	return string(b)
-}

bpm_utils/package_utils.go

@@ -1,757 +0,0 @@
-package bpm_utils
-
-import (
-	"archive/tar"
-	"bufio"
-	"compress/gzip"
-	"errors"
-	"fmt"
-	"io"
-	"io/fs"
-	"log"
-	"os"
-	"os/exec"
-	"path"
-	"path/filepath"
-	"slices"
-	"strconv"
-	"strings"
-)
-
-type PackageInfo struct {
-	Name        string
-	Description string
-	Version     string
-	Url         string
-	License     string
-	Arch        string
-	Type        string
-	Depends     []string
-	MakeDepends []string
-	Provides    []string
-}
-
-func GetPackageInfoRaw(filename string) (string, error) {
-	if _, err := os.Stat(filename); os.IsNotExist(err) {
-		return "", err
-	}
-	file, err := os.Open(filename)
-	if err != nil {
-		return "", err
-	}
-	archive, err := gzip.NewReader(file)
-	if err != nil {
-		return "", err
-	}
-	tr := tar.NewReader(archive)
-	for {
-		header, err := tr.Next()
-		if err == io.EOF {
-			break
-		}
-		if err != nil {
-			return "", err
-		}
-		if header.Name == "pkg.info" {
-			bs, _ := io.ReadAll(tr)
-			err := file.Close()
-			if err != nil {
-				return "", err
-			}
-			return string(bs), nil
-		}
-	}
-	return "", errors.New("pkg.info not found in archive")
-}
-
-func ReadPackage(filename string) (*PackageInfo, error) {
-	if _, err := os.Stat(filename); os.IsNotExist(err) {
-		return nil, err
-	}
-	file, err := os.Open(filename)
-	if err != nil {
-		return nil, err
-	}
-	archive, err := gzip.NewReader(file)
-	if err != nil {
-		return nil, err
-	}
-	tr := tar.NewReader(archive)
-	for {
-		header, err := tr.Next()
-		if err == io.EOF {
-			break
-		}
-		if err != nil {
-			return nil, err
-		}
-		if header.Name == "pkg.info" {
-			bs, _ := io.ReadAll(tr)
-			err := file.Close()
-			if err != nil {
-				return nil, err
-			}
-			pkgInfo, err := ReadPackageInfo(string(bs), false)
-			if err != nil {
-				return nil, err
-			}
-			return pkgInfo, nil
-		}
-	}
-	return nil, errors.New("pkg.info not found in archive")
-}
-
-func ReadPackageInfo(contents string, defaultValues bool) (*PackageInfo, error) {
-	pkgInfo := PackageInfo{
-		Name:        "",
-		Description: "",
-		Version:     "",
-		Url:         "",
-		License:     "",
-		Arch:        "",
-		Type:        "",
-		Depends:     nil,
-		MakeDepends: nil,
-		Provides:    nil,
-	}
-	lines := strings.Split(contents, "\n")
-	for num, line := range lines {
-		if len(strings.TrimSpace(line)) == 0 {
-			continue
-		}
-		if line[0] == '#' {
-			continue
-		}
-		split := strings.SplitN(line, ":", 2)
-		if len(split) != 2 {
-			return nil, errors.New("invalid pkg.info format at line " + strconv.Itoa(num))
-		}
-		split[0] = strings.Trim(split[0], " ")
-		split[1] = strings.Trim(split[1], " ")
-		switch split[0] {
-		case "name":
-			pkgInfo.Name = split[1]
-		case "description":
-			pkgInfo.Description = split[1]
-		case "version":
-			pkgInfo.Version = split[1]
-		case "url":
-			pkgInfo.Url = split[1]
-		case "license":
-			pkgInfo.License = split[1]
-		case "architecture":
-			pkgInfo.Arch = split[1]
-		case "type":
-			pkgInfo.Type = split[1]
-		case "depends":
-			pkgInfo.Depends = strings.Split(strings.Replace(split[1], " ", "", -1), ",")
-			pkgInfo.Depends = stringSliceRemoveEmpty(pkgInfo.Depends)
-		case "make_depends":
-			pkgInfo.MakeDepends = strings.Split(strings.Replace(split[1], " ", "", -1), ",")
-			pkgInfo.MakeDepends = stringSliceRemoveEmpty(pkgInfo.MakeDepends)
-		case "provides":
-			pkgInfo.Provides = strings.Split(strings.Replace(split[1], " ", "", -1), ",")
-			pkgInfo.Provides = stringSliceRemoveEmpty(pkgInfo.Provides)
-		}
-	}
-	if !defaultValues {
-		if pkgInfo.Name == "" {
-			return nil, errors.New("this package contains no name")
-		} else if pkgInfo.Description == "" {
-			return nil, errors.New("this package contains no description")
-		} else if pkgInfo.Version == "" {
-			return nil, errors.New("this package contains no version")
-		} else if pkgInfo.Arch == "" {
-			return nil, errors.New("this package contains no architecture")
-		} else if pkgInfo.Type == "" {
-			return nil, errors.New("this package contains no type")
-		}
-	}
-	return &pkgInfo, nil
-}
-
-func CreateInfoFile(pkgInfo PackageInfo) string {
-	ret := ""
-	ret = ret + "name: " + pkgInfo.Name + "\n"
-	ret = ret + "description: " + pkgInfo.Description + "\n"
-	ret = ret + "version: " + pkgInfo.Version + "\n"
-	if pkgInfo.Url != "" {
-		ret = ret + "url: " + pkgInfo.Url + "\n"
-	}
-	if pkgInfo.License != "" {
-		ret = ret + "license: " + pkgInfo.License + "\n"
-	}
-	ret = ret + "architecture: " + pkgInfo.Arch + "\n"
-	ret = ret + "type: " + pkgInfo.Type + "\n"
-	if len(pkgInfo.Depends) > 0 {
-		ret = ret + "depends (" + strconv.Itoa(len(pkgInfo.Depends)) + "): " + strings.Join(pkgInfo.Depends, ",") + "\n"
-	}
-	if len(pkgInfo.Provides) > 0 {
-		ret = ret + "provides (" + strconv.Itoa(len(pkgInfo.Provides)) + "): " + strings.Join(pkgInfo.Provides, ",") + "\n"
-	}
-	return ret
-}
-
-func InstallPackage(filename, installDir string, force bool) error {
-	if _, err := os.Stat(filename); os.IsNotExist(err) {
-		return err
-	}
-	file, err := os.Open(filename)
-	if err != nil {
-		return err
-	}
-	archive, err := gzip.NewReader(file)
-	if err != nil {
-		return err
-	}
-	tr := tar.NewReader(archive)
-	var files []string
-	pkgInfo, err := ReadPackage(filename)
-	if err != nil {
-		return err
-	}
-	if !force {
-		if pkgInfo.Arch != GetArch() {
-			return errors.New("cannot install a package with a different architecture")
-		}
-		if unresolved := CheckDependencies(pkgInfo, installDir); len(unresolved) != 0 {
-			return errors.New("Could not resolve all dependencies. Missing " + strings.Join(unresolved, ", "))
-		}
-	}
-
-	if pkgInfo.Type == "binary" {
-		seenHardlinks := make(map[string]string)
-		for {
-			header, err := tr.Next()
-			if err == io.EOF {
-				break
-			}
-			if err != nil {
-				return err
-			}
-			if strings.HasPrefix(header.Name, "files/") && header.Name != "files/" {
-				extractFilename := path.Join(installDir, strings.TrimPrefix(header.Name, "files/"))
-				switch header.Typeflag {
-				case tar.TypeDir:
-					files = append(files, strings.TrimPrefix(header.Name, "files/"))
-					if err := os.Mkdir(extractFilename, 0755); err != nil {
-						if !os.IsExist(err) {
-							return err
-						}
-					} else {
-						fmt.Println("Creating Directory: " + extractFilename)
-					}
-				case tar.TypeReg:
-					err := os.Remove(extractFilename)
-					if err != nil && !os.IsNotExist(err) {
-						return err
-					}
-					outFile, err := os.Create(extractFilename)
-					fmt.Println("Creating File: " + extractFilename)
-					files = append(files, strings.TrimPrefix(header.Name, "files/"))
-					if err != nil {
-						return err
-					}
-					if _, err := io.Copy(outFile, tr); err != nil {
-						return err
-					}
-					if err := os.Chmod(extractFilename, header.FileInfo().Mode()); err != nil {
-						return err
-					}
-					err = outFile.Close()
-					if err != nil {
-						return err
-					}
-				case tar.TypeSymlink:
-					fmt.Println("Creating Symlink: " + extractFilename + " -> " + header.Linkname)
-					files = append(files, strings.TrimPrefix(header.Name, "files/"))
-					err := os.Remove(extractFilename)
-					if err != nil && !os.IsNotExist(err) {
-						return err
-					}
-					err = os.Symlink(header.Linkname, extractFilename)
-					if err != nil {
-						return err
-					}
-				case tar.TypeLink:
-					fmt.Println("Detected Hard Link: " + extractFilename + " -> " + path.Join(installDir, strings.TrimPrefix(header.Linkname, "files/")))
-					files = append(files, strings.TrimPrefix(header.Name, "files/"))
-					seenHardlinks[extractFilename] = path.Join(strings.TrimPrefix(header.Linkname, "files/"))
-					err := os.Remove(extractFilename)
-					if err != nil && !os.IsNotExist(err) {
-						return err
-					}
-				default:
-					return errors.New("ExtractTarGz: unknown type: " + strconv.Itoa(int(header.Typeflag)) + " in " + extractFilename)
-				}
-			}
-		}
-		for extractFilename, destination := range seenHardlinks {
-			fmt.Println("Creating Hard Link: " + extractFilename + " -> " + path.Join(installDir, destination))
-			err := os.Link(path.Join(installDir, destination), extractFilename)
-			if err != nil {
-				return err
-			}
-		}
-	} else if pkgInfo.Type == "source" {
-		for {
-			header, err := tr.Next()
-			if err == io.EOF {
-				break
-			}
-			if err != nil {
-				return err
-			}
-			if header.Name == "source.sh" {
-				bs, err := io.ReadAll(tr)
-				if err != nil {
-					return err
-				}
-				temp, err := os.MkdirTemp("/var/tmp/", "bpm_source-")
-				fmt.Println("Creating temp directory at: " + temp)
-				if err != nil {
-					return err
-				}
-				err = os.WriteFile(path.Join(temp, "source.sh"), bs, 0644)
-				if err != nil {
-					return err
-				}
-				fmt.Println("Running source.sh file...")
-				cmd := exec.Command("/usr/bin/sh", "source.sh")
-				cmd.Stdin = os.Stdin
-				cmd.Stdout = os.Stdout
-				cmd.Stderr = os.Stderr
-				cmd.Dir = temp
-				err = cmd.Run()
-				if err != nil {
-					return err
-				}
-				if _, err := os.Stat(path.Join(temp, "/output/")); err != nil {
-					if os.IsNotExist(err) {
-						return errors.New("Output directory not be found at " + path.Join(temp, "/output/"))
-					}
-					return err
-				}
-				fmt.Println("Copying all files...")
-				err = filepath.WalkDir(path.Join(temp, "/output/"), func(fullpath string, d fs.DirEntry, err error) error {
-					relFilename, err := filepath.Rel(path.Join(temp, "/output/"), fullpath)
-					if relFilename == "." {
-						return nil
-					}
-					extractFilename := path.Join(installDir, relFilename)
-					if err != nil {
-						return err
-					}
-					if d.Type() == os.ModeDir {
-						files = append(files, relFilename+"/")
-						if err := os.Mkdir(extractFilename, 0755); err != nil {
-							if !os.IsExist(err) {
-								return err
-							}
-						} else {
-							fmt.Println("Creating Directory: " + extractFilename)
-						}
-					} else if d.Type().IsRegular() {
-						outFile, err := os.Create(extractFilename)
-						fmt.Println("Creating File: " + extractFilename)
-						files = append(files, relFilename)
-						if err != nil {
-							return err
-						}
-						f, err := os.Open(fullpath)
-						if err != nil {
-							return err
-						}
-						if _, err := io.Copy(outFile, f); err != nil {
-							return err
-						}
-						info, err := os.Stat(fullpath)
-						if err != nil {
-							return err
-						}
-						if err := os.Chmod(extractFilename, info.Mode()); err != nil {
-							return err
-						}
-						err = outFile.Close()
-						if err != nil {
-							return err
-						}
-						err = f.Close()
-						if err != nil {
-							return err
-						}
-					} else if d.Type() == os.ModeSymlink {
-						link, err := os.Readlink(fullpath)
-						if err != nil {
-							return err
-						}
-						fmt.Println("Creating Symlink: "+extractFilename, " -> "+link)
-						files = append(files, relFilename)
-						err = os.Symlink(link, extractFilename)
-						if err != nil {
-							return err
-						}
-					}
-					return nil
-				})
-				if err != nil {
-					return err
-				}
-			}
-		}
-	} else {
-		return errors.New("Unknown package type: " + pkgInfo.Type)
-	}
-	slices.Sort(files)
-	slices.Reverse(files)
-
-	installedDir := path.Join(installDir, "var/lib/bpm/installed/")
-	err = os.MkdirAll(installedDir, 755)
-	if err != nil {
-		return err
-	}
-	pkgDir := path.Join(installedDir, pkgInfo.Name)
-	err = os.RemoveAll(pkgDir)
-	if err != nil {
-		return err
-	}
-	err = os.Mkdir(pkgDir, 755)
-	if err != nil {
-		return err
-	}
-
-	f, err := os.Create(path.Join(pkgDir, "files"))
-	if err != nil {
-		return err
-	}
-	for _, line := range files {
-		_, err := f.WriteString(line + "\n")
-		if err != nil {
-			return err
-		}
-	}
-	err = f.Close()
-	if err != nil {
-		return err
-	}
-
-	f, err = os.Create(path.Join(pkgDir, "info"))
-	if err != nil {
-		return err
-	}
-	raw, err := GetPackageInfoRaw(filename)
-	if err != nil {
-		return err
-	}
-	_, err = f.WriteString(raw)
-	if err != nil {
-		return err
-	}
-	err = f.Close()
-	if err != nil {
-		return err
-	}
-
-	err = archive.Close()
-	if err != nil {
-		return err
-	}
-	err = file.Close()
-	if err != nil {
-		return err
-	}
-	return nil
-}
-
-func GetSourceScript(filename string) (string, error) {
-	pkgInfo, err := ReadPackage(filename)
-	if err != nil {
-		return "", err
-	}
-	if pkgInfo.Type != "source" {
-		return "", errors.New("package not of source type")
-	}
-	file, err := os.Open(filename)
-	if err != nil {
-		return "", err
-	}
-	archive, err := gzip.NewReader(file)
-	if err != nil {
-		return "", err
-	}
-	tr := tar.NewReader(archive)
-	for {
-		header, err := tr.Next()
-		if err == io.EOF {
-			break
-		}
-		if header.Name == "source.sh" {
-			err := archive.Close()
-			if err != nil {
-				return "", err
-			}
-			err = file.Close()
-			if err != nil {
-				return "", err
-			}
-			bs, err := io.ReadAll(tr)
-			if err != nil {
-				return "", err
-			}
-			return string(bs), nil
-		}
-	}
-	return "", errors.New("package does not contain a source.sh file")
-}
-
-func CheckDependencies(pkgInfo *PackageInfo, rootDir string) []string {
-	unresolved := make([]string, len(pkgInfo.Depends))
-	copy(unresolved, pkgInfo.Depends)
-	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
-	if _, err := os.Stat(installedDir); err != nil {
-		return nil
-	}
-	items, err := os.ReadDir(installedDir)
-	if err != nil {
-		return nil
-	}
-
-	for _, item := range items {
-		if !item.IsDir() {
-			continue
-		}
-		_, err := os.Stat(path.Join(installedDir, item.Name(), "/info"))
-		if err != nil {
-			return nil
-		}
-		bs, err := os.ReadFile(path.Join(installedDir, item.Name(), "/info"))
-		if err != nil {
-			return nil
-		}
-		info, err := ReadPackageInfo(string(bs), false)
-		if err != nil {
-			return nil
-		}
-		if slices.Contains(unresolved, info.Name) {
-			unresolved = stringSliceRemove(unresolved, info.Name)
-		}
-		for _, prov := range info.Provides {
-			if slices.Contains(unresolved, prov) {
-				unresolved = stringSliceRemove(unresolved, prov)
-			}
-		}
-	}
-	return unresolved
-}
-
-func CheckMakeDependencies(pkgInfo *PackageInfo, rootDir string) []string {
-	unresolved := make([]string, len(pkgInfo.MakeDepends))
-	copy(unresolved, pkgInfo.MakeDepends)
-	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
-	if _, err := os.Stat(installedDir); err != nil {
-		return nil
-	}
-	items, err := os.ReadDir(installedDir)
-	if err != nil {
-		return nil
-	}
-
-	for _, item := range items {
-		if !item.IsDir() {
-			continue
-		}
-		_, err := os.Stat(path.Join(installedDir, item.Name(), "/info"))
-		if err != nil {
-			return nil
-		}
-		bs, err := os.ReadFile(path.Join(installedDir, item.Name(), "/info"))
-		if err != nil {
-			return nil
-		}
-		info, err := ReadPackageInfo(string(bs), false)
-		if err != nil {
-			return nil
-		}
-		if slices.Contains(unresolved, info.Name) {
-			unresolved = stringSliceRemove(unresolved, info.Name)
-		}
-		for _, prov := range info.Provides {
-			if slices.Contains(unresolved, prov) {
-				unresolved = stringSliceRemove(unresolved, prov)
-			}
-		}
-	}
-	return unresolved
-}
-
-func IsPackageInstalled(pkg, rootDir string) bool {
-	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
-	pkgDir := path.Join(installedDir, pkg)
-	if _, err := os.Stat(pkgDir); err != nil {
-		return false
-	}
-	return true
-}
-
-func GetInstalledPackages(rootDir string) ([]string, error) {
-	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
-	items, err := os.ReadDir(installedDir)
-	if os.IsNotExist(err) {
-		return nil, nil
-	}
-	if err != nil {
-		return nil, err
-	}
-	var ret []string
-	for _, item := range items {
-		ret = append(ret, item.Name())
-	}
-	return ret, nil
-}
-
-func GetPackageFiles(pkg, rootDir string) []string {
-	var ret []string
-	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
-	pkgDir := path.Join(installedDir, pkg)
-	files := path.Join(pkgDir, "files")
-	if _, err := os.Stat(installedDir); os.IsNotExist(err) {
-		return nil
-	}
-	if _, err := os.Stat(pkgDir); os.IsNotExist(err) {
-		return nil
-	}
-	file, err := os.Open(files)
-	if err != nil {
-		return nil
-	}
-	scanner := bufio.NewScanner(file)
-	for scanner.Scan() {
-		ret = append(ret, scanner.Text())
-	}
-	return ret
-}
-
-func GetPackageInfo(pkg, rootDir string, defaultValues bool) *PackageInfo {
-	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
-	pkgDir := path.Join(installedDir, pkg)
-	files := path.Join(pkgDir, "info")
-	if _, err := os.Stat(installedDir); os.IsNotExist(err) {
-		return nil
-	}
-	if _, err := os.Stat(pkgDir); os.IsNotExist(err) {
-		return nil
-	}
-	file, err := os.Open(files)
-	if err != nil {
-		return nil
-	}
-	bs, err := io.ReadAll(file)
-	if err != nil {
-		return nil
-	}
-	info, err := ReadPackageInfo(string(bs), defaultValues)
-	if err != nil {
-		return nil
-	}
-	return info
-}
-
-func setPackageInfo(pkg, contents, rootDir string) error {
-	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
-	pkgDir := path.Join(installedDir, pkg)
-	info := path.Join(pkgDir, "info")
-	if _, err := os.Stat(installedDir); os.IsNotExist(err) {
-		return err
-	}
-	if _, err := os.Stat(pkgDir); os.IsNotExist(err) {
-		return err
-	}
-	bs := []byte(contents)
-	err := os.WriteFile(info, bs, 0644)
-	if err != nil {
-		return err
-	}
-	return nil
-}
-
-func RemovePackage(pkg, rootDir string) error {
-	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
-	pkgDir := path.Join(installedDir, pkg)
-	files := GetPackageFiles(pkg, rootDir)
-	for _, file := range files {
-		file = path.Join(rootDir, file)
-		stat, err := os.Lstat(file)
-		if os.IsNotExist(err) {
-			continue
-		}
-		if err != nil {
-			return err
-		}
-		if stat.IsDir() {
-			dir, err := os.ReadDir(file)
-			if err != nil {
-				return err
-			}
-			if len(dir) == 0 {
-				fmt.Println("Removing: " + file)
-				err := os.Remove(file)
-				if err != nil {
-					return err
-				}
-			}
-		} else {
-			fmt.Println("Removing: " + file)
-			err := os.Remove(file)
-			if err != nil {
-				return err
-			}
-		}
-	}
-	err := os.RemoveAll(pkgDir)
-	if err != nil {
-		return err
-	}
-	fmt.Println("Removing: " + pkgDir)
-	return nil
-}
-
-func FixInstalledPackages(rootDir string) (map[string]error, int) {
-	var errs map[string]error
-	totalFixed := 0
-	pkgs, err := GetInstalledPackages(rootDir)
-	if err != nil {
-		log.Fatalf("Could not check if installed package info files are formatted correctly\nError: %s", err.Error())
-	}
-	for _, pkg := range pkgs {
-		fixed := false
-		pkgInfo := GetPackageInfo(pkg, "/", true)
-		if pkgInfo.Name == "" {
-			errs[pkg] = errors.New("this package contains no name")
-			continue
-		}
-		if pkgInfo.Description == "" {
-			pkgInfo.Description = "Default Description"
-			fixed = true
-		}
-		if pkgInfo.Version == "" {
-			errs[pkg] = errors.New("this package contains no version")
-			continue
-		}
-		if pkgInfo.Arch == "" {
-			pkgInfo.Arch = GetArch()
-			fixed = true
-		}
-		if pkgInfo.Type == "" {
-			errs[pkg] = errors.New("this package contains no type")
-			continue
-		}
-		if fixed {
-			totalFixed++
-		}
-		err := setPackageInfo(pkg, CreateInfoFile(*pkgInfo), rootDir)
-		if err != nil {
-			log.Fatalf("Could not check if installed package info files are formatted correctly\nError: %s", err.Error())
-		}
-	}
-	return errs, totalFixed
-}

config.go

@@ -1 +0,0 @@
-package main

config/bpm-compilation.conf

@@ -0,0 +1,2 @@
+privilege_escalator_cmd: "sudo"
+compilation_env: []

config/bpm.conf

@@ -0,0 +1,7 @@
+ignore_packages: []
+show_source_package_contents: always
+cleanup_make_dependencies: true
+databases:
+  - name: example-database
+    source: https://my-database.xyz/
+    disabled: true

go.mod

@@ -1,3 +0,0 @@
-module capcreepergr.me/bpm
-
-go 1.22

main.go

@@ -1,312 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"capcreepergr.me/bpm/bpm_utils"
-	"fmt"
-	"log"
-	"os"
-	"path"
-	"slices"
-	"strconv"
-	"strings"
-)
-
-/* ---BPM | Bubble Package Manager--- */
-/*        Made By CapCreeperGR        */
-/*   A simple-to-use package manager  */
-/* ---------------------------------- */
-
-var bpmVer = "0.0.9"
-var rootDir = "/"
-
-func main() {
-	errs, fixed := bpm_utils.FixInstalledPackages(rootDir)
-	if len(errs) != 0 {
-		for pkg, err := range errs {
-			fmt.Printf("Package (%s) could not be read properly\nError: %s\n", pkg, err.Error())
-		}
-		fmt.Println("The aforementioned packages require manual fixing. Make sure their info files are valid in " + path.Join(rootDir, "var/lib/bpm/installed"))
-		os.Exit(1)
-	} else {
-		if fixed != 0 {
-			fmt.Println("Fixed " + strconv.Itoa(fixed) + " outdated package info files")
-		}
-	}
-	if os.Getuid() != 0 {
-		fmt.Println("BPM needs to be run with superuser permissions")
-		os.Exit(0)
-	}
-	resolveCommand()
-}
-
-func getArgs() []string {
-	return os.Args[1:]
-}
-
-type commandType uint8
-
-const (
-	help commandType = iota
-	version
-	info
-	list
-	install
-	remove
-	cleanup
-)
-
-func getCommandType() commandType {
-	if len(getArgs()) == 0 {
-		return help
-	}
-	cmd := getArgs()[0]
-	switch cmd {
-	case "version":
-		return version
-	case "info":
-		return info
-	case "list":
-		return list
-	case "install":
-		return install
-	case "remove":
-		return remove
-	case "cleanup":
-		return cleanup
-	default:
-		return help
-	}
-
-}
-
-func resolveCommand() {
-	switch getCommandType() {
-	case version:
-		resolveFlags()
-		fmt.Println("Bubble Package Manager (BPM)")
-		fmt.Println("Version: " + bpmVer)
-	case info:
-		_, i := resolveFlags()
-		packages := getArgs()[1+i:]
-		if len(packages) == 0 {
-			fmt.Println("No packages were given")
-			return
-		}
-		for n, pkg := range packages {
-			info := bpm_utils.GetPackageInfo(pkg, rootDir, false)
-			if info == nil {
-				fmt.Printf("Package (%s) could not be found\n", pkg)
-				continue
-			}
-			fmt.Print("----------------\n" + bpm_utils.CreateInfoFile(*info))
-			if n == len(packages)-1 {
-				fmt.Println("----------------")
-			}
-		}
-	case list:
-		flags, _ := resolveFlags()
-		packages, err := bpm_utils.GetInstalledPackages(rootDir)
-		if err != nil {
-			log.Fatalf("Could not get installed packages\nError: %s", err.Error())
-			return
-		}
-		if len(packages) == 0 {
-			fmt.Println("No packages have been installed")
-			return
-		}
-		if slices.Contains(flags, "n") {
-			fmt.Println(len(packages))
-		} else if slices.Contains(flags, "l") {
-			for _, pkg := range packages {
-				fmt.Println(pkg)
-			}
-		} else {
-			for n, pkg := range packages {
-				info := bpm_utils.GetPackageInfo(pkg, rootDir, false)
-				if info == nil {
-					fmt.Printf("Package (%s) could not be found\n", pkg)
-					continue
-				}
-				fmt.Print("----------------\n" + bpm_utils.CreateInfoFile(*info))
-				if n == len(packages)-1 {
-					fmt.Println("----------------")
-				}
-			}
-		}
-	case install:
-		flags, i := resolveFlags()
-		files := getArgs()[1+i:]
-		if len(files) == 0 {
-			fmt.Println("No files were given to install")
-			return
-		}
-		for _, file := range files {
-			pkgInfo, err := bpm_utils.ReadPackage(file)
-			if err != nil {
-				log.Fatalf("Could not read package\nError: %s\n", err)
-			}
-			fmt.Print("----------------\n" + bpm_utils.CreateInfoFile(*pkgInfo))
-			fmt.Println("----------------")
-			verb := "install"
-			if pkgInfo.Type == "source" {
-				verb = "build"
-			}
-			if !slices.Contains(flags, "f") {
-				if pkgInfo.Arch != bpm_utils.GetArch() {
-					fmt.Printf("skipping... cannot %s a package with a different architecture\n", verb)
-					continue
-				}
-				if unresolved := bpm_utils.CheckDependencies(pkgInfo, rootDir); len(unresolved) != 0 {
-					fmt.Printf("skipping... cannot %s package (%s) due to missing dependencies: %s\n", verb, pkgInfo.Name, strings.Join(unresolved, ", "))
-					continue
-				}
-				if pkgInfo.Type == "source" {
-					if unresolved := bpm_utils.CheckMakeDependencies(pkgInfo, rootDir); len(unresolved) != 0 {
-						fmt.Printf("skipping... cannot %s package (%s) due to missing make dependencies: %s\n", verb, pkgInfo.Name, strings.Join(unresolved, ", "))
-						continue
-					}
-				}
-			}
-			if !slices.Contains(flags, "y") {
-				reader := bufio.NewReader(os.Stdin)
-				if pkgInfo.Type == "source" {
-					fmt.Print("Would you like to view the source.sh file of this package? [Y\\n] ")
-					text, _ := reader.ReadString('\n')
-					if strings.TrimSpace(strings.ToLower(text)) != "n" && strings.TrimSpace(strings.ToLower(text)) != "no" {
-						script, err := bpm_utils.GetSourceScript(file)
-						if err != nil {
-							log.Fatalf("Could not read source script\nError: %s\n", err)
-						}
-						fmt.Println(script)
-						fmt.Println("-------EOF-------")
-					}
-				}
-			}
-			if bpm_utils.IsPackageInstalled(pkgInfo.Name, rootDir) {
-				if !slices.Contains(flags, "y") {
-					installedInfo := bpm_utils.GetPackageInfo(pkgInfo.Name, rootDir, false)
-					if strings.Compare(pkgInfo.Version, installedInfo.Version) > 0 {
-						fmt.Println("This file contains a newer version of this package (" + installedInfo.Version + " -> " + pkgInfo.Version + ")")
-						fmt.Print("Do you wish to update this package? [y\\N] ")
-					} else if strings.Compare(pkgInfo.Version, installedInfo.Version) < 0 {
-						fmt.Println("This file contains an older version of this package (" + installedInfo.Version + " -> " + pkgInfo.Version + ")")
-						fmt.Print("Do you wish to downgrade this package? (Not recommended) [y\\N] ")
-					} else if strings.Compare(pkgInfo.Version, installedInfo.Version) == 0 {
-						fmt.Println("This package is already installed on the system and is up to date")
-						fmt.Printf("Do you wish to re%s this package? [y\\N] ", verb)
-					}
-					reader := bufio.NewReader(os.Stdin)
-					text, _ := reader.ReadString('\n')
-					if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
-						fmt.Printf("Skipping package (%s)...\n", pkgInfo.Name)
-						continue
-					}
-				}
-				err := bpm_utils.RemovePackage(pkgInfo.Name, rootDir)
-				if err != nil {
-					log.Fatalf("Could not remove current version of the package\nError: %s\n", err)
-				}
-			} else if !slices.Contains(flags, "y") {
-				reader := bufio.NewReader(os.Stdin)
-				fmt.Printf("Do you wish to %s this package? [y\\N] ", verb)
-				text, _ := reader.ReadString('\n')
-				if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
-					fmt.Printf("Skipping package (%s)...\n", pkgInfo.Name)
-					continue
-				}
-			}
-
-			err = bpm_utils.InstallPackage(file, rootDir, slices.Contains(flags, "f"))
-			if err != nil {
-				if pkgInfo.Type == "source" {
-					fmt.Println("** It is recommended you delete the temporary bpm folder in /var/tmp **")
-				}
-				log.Fatalf("Could not install package\nError: %s\n", err)
-			}
-			fmt.Printf("Package (%s) was successfully installed!\n", pkgInfo.Name)
-			if pkgInfo.Type == "source" {
-				fmt.Println("** It is recommended you delete the temporary bpm folder in /var/tmp **")
-			}
-		}
-	case remove:
-		flags, i := resolveFlags()
-		packages := getArgs()[1+i:]
-		if len(packages) == 0 {
-			fmt.Println("No packages were given")
-			return
-		}
-		for _, pkg := range packages {
-			pkgInfo := bpm_utils.GetPackageInfo(pkg, rootDir, false)
-			if pkgInfo == nil {
-				fmt.Printf("Package (%s) could not be found\n", pkg)
-				continue
-			}
-			fmt.Print("----------------\n" + bpm_utils.CreateInfoFile(*pkgInfo))
-			fmt.Println("----------------")
-			if !slices.Contains(flags, "y") {
-				reader := bufio.NewReader(os.Stdin)
-				fmt.Print("Do you wish to remove this package? [y\\N] ")
-				text, _ := reader.ReadString('\n')
-				if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
-					fmt.Printf("Skipping package (%s)...\n", pkgInfo.Name)
-					continue
-				}
-			}
-			err := bpm_utils.RemovePackage(pkg, rootDir)
-
-			if err != nil {
-				log.Fatalf("Could not remove package\nError: %s\n", err)
-			}
-			fmt.Printf("Package (%s) was successfully removed!\n", pkgInfo.Name)
-		}
-	default:
-		fmt.Println("\033[1m------Help------\033[0m")
-		fmt.Println("\033[1m\\ Command Format /\033[0m")
-		fmt.Println("-> command format: bpm <subcommand> [-flags]...")
-		fmt.Println("-> flags will be read if passed right after the subcommand otherwise they will be read as subcommand arguments")
-		fmt.Println("\033[1m\\ Command List /\033[0m")
-		fmt.Println("-> bpm version | shows information on the installed version of bpm")
-		fmt.Println("-> bpm info | shows information on an installed package")
-		fmt.Println("-> bpm list [-n, -l] | lists all installed packages. -n shows the number of packages. -l lists package names only")
-		fmt.Println("-> bpm install [-y, -f] <files...> | installs the following files. -y skips the confirmation prompt. -f skips dependency and architecture checking")
-		fmt.Println("-> bpm remove [-y] <packages...> | removes the following packages. -y skips the confirmation prompt")
-		fmt.Println("-> bpm cleanup | removes all unneeded dependencies")
-		fmt.Println("\033[1m----------------\033[0m")
-	}
-}
-
-func resolveFlags() ([]string, int) {
-	flags := getArgs()[1:]
-	var ret []string
-	for _, flag := range flags {
-		if strings.HasPrefix(flag, "-") {
-			f := strings.TrimPrefix(flag, "-")
-			switch getCommandType() {
-			default:
-				log.Fatalf("Invalid flag " + flag)
-			case list:
-				v := [...]string{"l", "n"}
-				if !slices.Contains(v[:], f) {
-					log.Fatalf("Invalid flag " + flag)
-				}
-				ret = append(ret, f)
-			case install:
-				v := [...]string{"y", "f"}
-				if !slices.Contains(v[:], f) {
-					log.Fatalf("Invalid flag " + flag)
-				}
-				ret = append(ret, f)
-			case remove:
-				v := [...]string{"y"}
-				if !slices.Contains(v[:], f) {
-					log.Fatalf("Invalid flag " + flag)
-				}
-				ret = append(ret, f)
-			}
-		} else {
-			break
-		}
-	}
-	return ret, len(ret)
-}

src/bpm/go.mod

@@ -0,0 +1,23 @@
+module bpm
+
+go 1.24.0
+
+require (
+	github.com/EnumeratedDev/bpm/src/bpmlib v0.0.0
+	github.com/lithammer/fuzzysearch v1.1.8
+	github.com/spf13/pflag v1.0.10
+)
+
+replace github.com/EnumeratedDev/bpm/src/bpmlib => ../bpmlib
+
+require (
+	github.com/drone/envsubst v1.0.3 // indirect
+	github.com/knqyf263/go-rpm-version v0.0.0-20240918084003-2afd7dc6a38f // indirect
+	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/schollz/progressbar/v3 v3.18.0 // indirect
+	golang.org/x/sys v0.37.0 // indirect
+	golang.org/x/term v0.36.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

src/bpm/go.sum

@@ -0,0 +1,66 @@
+github.com/chengxilo/virtualterm v1.0.4 h1:Z6IpERbRVlfB8WkOmtbHiDbBANU7cimRIof7mk9/PwM=
+github.com/chengxilo/virtualterm v1.0.4/go.mod h1:DyxxBZz/x1iqJjFxTFcr6/x+jSpqN0iwWCOK1q10rlY=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/drone/envsubst v1.0.3 h1:PCIBwNDYjs50AsLZPYdfhSATKaRg/FJmDc2D6+C2x8g=
+github.com/drone/envsubst v1.0.3/go.mod h1:N2jZmlMufstn1KEqvbHjw40h1KyTmnVzHcSc9bFiJ2g=
+github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
+github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
+github.com/knqyf263/go-rpm-version v0.0.0-20240918084003-2afd7dc6a38f h1:xt29M2T6STgldg+WEP51gGePQCsQvklmP2eIhPIBK3g=
+github.com/knqyf263/go-rpm-version v0.0.0-20240918084003-2afd7dc6a38f/go.mod h1:i4sF0l1fFnY1aiw08QQSwVAFxHEm311Me3WsU/X7nL0=
+github.com/lithammer/fuzzysearch v1.1.8 h1:/HIuJnjHuXS8bKaiTMeeDlW2/AyIWk2brx1V8LFgLN4=
+github.com/lithammer/fuzzysearch v1.1.8/go.mod h1:IdqeyBClc3FFqSzYq/MXESsS4S0FsZ5ajtkr5xPLts4=
+github.com/mattn/go-runewidth v0.0.16 h1:E5ScNMtiwvlvB5paMFdw9p4kSQzbXFikJ5SQO6TULQc=
+github.com/mattn/go-runewidth v0.0.16/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db h1:62I3jR2EmQ4l5rM/4FEfDWcRD+abF5XlKShorW5LRoQ=
+github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db/go.mod h1:l0dey0ia/Uv7NcFFVbCLtqEBQbrT4OCwCSKTEv6enCw=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
+github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/schollz/progressbar/v3 v3.18.0 h1:uXdoHABRFmNIjUfte/Ex7WtuyVslrw2wVPQmCN62HpA=
+github.com/schollz/progressbar/v3 v3.18.0/go.mod h1:IsO3lpbaGuzh8zIMzgY3+J8l4C8GjO0Y9S69eFvNsec=
+github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
+github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.37.0 h1:fdNQudmxPjkdUTPnLn5mdQv7Zwvbvpaxqs831goi9kQ=
+golang.org/x/sys v0.37.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/term v0.36.0 h1:zMPR+aF8gfksFprF/Nc/rd1wRS1EI6nDBGyWAvDzx2Q=
+golang.org/x/term v0.36.0/go.mod h1:Qu394IJq6V6dCBRgwqshf3mPF85AqzYEzofzRdZkWss=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE=
+golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

src/bpmlib/compilation.go

@@ -0,0 +1,758 @@
+package bpmlib
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"io"
+	"io/fs"
+	"os"
+	"os/exec"
+	"path"
+	"path/filepath"
+	"runtime"
+	"slices"
+	"strconv"
+	"strings"
+	"syscall"
+
+	"github.com/drone/envsubst"
+	"gopkg.in/yaml.v3"
+)
+
+var rootCompilationUID = "65534"
+var rootCompilationGID = "65534"
+
+func CompileSourcePackage(archiveFilename, outputDirectory string, compilationJobs int, skipChecks, keepCompilationFiles, verbose bool) (outputBpmPackages map[string]string, err error) {
+	// Set compilation jobs
+	if compilationJobs <= 0 || compilationJobs > runtime.NumCPU() {
+		compilationJobs = runtime.NumCPU()
+	}
+
+	// Initialize map
+	outputBpmPackages = make(map[string]string)
+
+	// Read BPM archive
+	bpmpkg, err := ReadPackage(archiveFilename)
+	if err != nil {
+		return nil, err
+	}
+
+	// Ensure package type is 'source'
+	if bpmpkg.PkgInfo.Type != "source" {
+		return nil, errors.New("cannot compile a non-source package")
+	}
+
+	// Get HOME directory
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return nil, err
+	}
+
+	// Get UID and GID to use for compilation
+	var uid, gid int
+	if os.Getuid() == 0 {
+		_uid, err := strconv.ParseInt(rootCompilationUID, 10, 32)
+		if err != nil {
+			return nil, fmt.Errorf("could not convert UID '%s' to int", rootCompilationUID)
+		}
+		_gid, err := strconv.ParseInt(rootCompilationGID, 10, 32)
+		if err != nil {
+			return nil, fmt.Errorf("could not convert GID '%s' to int", rootCompilationGID)
+		}
+		uid = int(_uid)
+		gid = int(_gid)
+	} else {
+		uid = os.Getuid()
+		gid = os.Getgid()
+	}
+
+	// Set temporary directory
+	var tempDirectory string
+	if os.Getuid() == 0 {
+		tempDirectory = path.Join("/var/cache/bpm/compilation/", bpmpkg.PkgInfo.Name)
+	} else {
+		tempDirectory = path.Join(homeDir, ".cache/bpm/compilation/", bpmpkg.PkgInfo.Name)
+	}
+
+	// Ensure temporary directory does not exist
+	if _, err := os.Stat(tempDirectory); err == nil {
+		err := os.RemoveAll(tempDirectory)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// Create temporary directory
+	err = os.MkdirAll(tempDirectory, 0755)
+	if err != nil {
+		return nil, err
+	}
+
+	// Change temporary directory owner
+	err = os.Chown(tempDirectory, uid, gid)
+	if err != nil {
+		return nil, err
+	}
+
+	// Extract source.sh file
+	err = extractTarballFile(archiveFilename, "source.sh", tempDirectory, uid, gid)
+	if err != nil {
+		return nil, err
+	}
+
+	// Get package scripts and extract them
+	packageScripts := getPackageScripts(archiveFilename)
+	for _, script := range packageScripts {
+		err = extractTarballFile(archiveFilename, script, tempDirectory, uid, gid)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// Extract source files
+	err = extractTarballDirectory(archiveFilename, "source-files", tempDirectory, uid, gid)
+	if err != nil {
+		return nil, err
+	}
+
+	// Create source directory
+	err = os.Mkdir(path.Join(tempDirectory, "source"), 0755)
+	if err != nil {
+		return nil, err
+	}
+
+	// Change source directory owner
+	err = os.Chown(path.Join(tempDirectory, "source"), uid, gid)
+	if err != nil {
+		return nil, err
+	}
+
+	// Download files
+	err = downloadPackageFiles(bpmpkg.PkgInfo, tempDirectory, verbose)
+	if err != nil {
+		return nil, err
+	}
+
+	// Setup environment for commands
+	env := os.Environ()
+	env = append(env, "HOME="+tempDirectory)
+	env = append(env, "BPM_WORKDIR="+tempDirectory)
+	env = append(env, "BPM_SOURCE="+path.Join(tempDirectory, "source"))
+	env = append(env, "BPM_PKG_NAME="+bpmpkg.PkgInfo.Name)
+	env = append(env, "BPM_PKG_VERSION="+bpmpkg.PkgInfo.Version)
+	env = append(env, "BPM_PKG_REVISION="+strconv.Itoa(bpmpkg.PkgInfo.Revision))
+	env = append(env, "BPM_PKG_URL="+bpmpkg.PkgInfo.Url)
+	env = append(env, "BPM_PKG_ARCH="+bpmpkg.PkgInfo.OutputArch)
+	env = append(env, "BPM_JOBS="+strconv.Itoa(compilationJobs))
+	env = append(env, CompilationBPMConfig.CompilationEnvironment...)
+
+	// Set common flags used for limiting job count
+	makeflags := ""
+	env = slices.DeleteFunc(env, func(s string) bool {
+		if strings.HasPrefix(s, "MAKEFLAGS=") {
+			makeflags = s + " "
+			return true
+		} else if strings.HasPrefix(s, "CMAKE_BUILD_PARALLEL_LEVEL=") {
+			return true
+		} else if strings.HasPrefix(s, "CARGO_BUILD_JOBS=") {
+			return true
+		}
+
+		return false
+	})
+	env = append(env, makeflags+"-j"+strconv.Itoa(compilationJobs))
+	env = append(env, "CMAKE_BUILD_PARALLEL_LEVEL="+strconv.Itoa(compilationJobs))
+	env = append(env, "CARGO_BUILD_JOBS="+strconv.Itoa(compilationJobs))
+
+	// Execute prepare and build functions in source.sh script
+	cmd := exec.Command("bash", "-c",
+		"set -a\n"+ // Source and export functions and variables in source.sh script
+			". \"${BPM_WORKDIR}\"/source.sh\n"+
+			"set +a\n"+
+			"[[ $(type -t prepare) == \"function\" ]] && { echo \"Running prepare() function...\"; bash -e -c 'cd \"$BPM_WORKDIR\" && prepare' || exit 1; }\n"+ // Run prepare() function if it exists
+			"[[ $(type -t build) == \"function\" ]] && { echo \"Running build() function...\"; bash -e -c 'cd \"$BPM_SOURCE\" && build'  || exit 1; }\n"+ // Run build() function if it exists
+			"exit 0")
+	cmd.Dir = tempDirectory
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	cmd.Env = env
+	if os.Getuid() == 0 {
+		cmd.SysProcAttr = &syscall.SysProcAttr{}
+		cmd.SysProcAttr.Credential = &syscall.Credential{Uid: uint32(uid), Gid: uint32(gid)}
+	}
+	err = cmd.Run()
+	if err != nil {
+		return nil, err
+	}
+
+	// Execute check function in source.sh script if not skipping checks
+	if !skipChecks {
+		cmd = exec.Command("bash", "-c",
+			"set -a\n"+ // Source and export functions and variables in source.sh script
+				". \"${BPM_WORKDIR}\"/source.sh\n"+
+				"set +a\n"+
+				"[[ $(type -t check) == \"function\" ]] && { echo \"Running check() function...\"; bash -e -c 'cd \"$BPM_SOURCE\" && check' || exit 1; }\n"+ // Run check() function if it exists
+				"exit 0")
+		cmd.Dir = tempDirectory
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		cmd.Env = env
+		if os.Getuid() == 0 {
+			cmd.SysProcAttr = &syscall.SysProcAttr{}
+			cmd.SysProcAttr.Credential = &syscall.Credential{Uid: uint32(uid), Gid: uint32(gid)}
+		}
+		err = cmd.Run()
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// Get all packages to compile
+	packagesToCompile := bpmpkg.PkgInfo.SplitPackages
+	if !bpmpkg.PkgInfo.IsSplitPackage() {
+		packagesToCompile = append(packagesToCompile, bpmpkg.PkgInfo)
+	}
+
+	// Create output directories for each package
+	for _, pkg := range packagesToCompile {
+		// Create new output directory
+		err = os.Mkdir(path.Join(tempDirectory, "output_"+pkg.Name), 0755)
+		if err != nil {
+			return nil, err
+		}
+
+		// Change output directory owner
+		err = os.Chown(path.Join(tempDirectory, "output_"+pkg.Name), uid, gid)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// Compile each package
+	for _, pkg := range packagesToCompile {
+		// Get package function name
+		packageFunctionName := "package"
+		if bpmpkg.PkgInfo.IsSplitPackage() {
+			packageFunctionName = "package_" + pkg.Name
+		}
+
+		// Execute package function in source.sh script and generate package file list
+		cmd = exec.Command("bash", "-c",
+			"set -a\n"+ // Source and export functions and variables in source.sh script
+				". \"${BPM_WORKDIR}\"/source.sh\n"+
+				"set +a\n"+
+				"echo \"Running "+packageFunctionName+"() function...\"\n"+
+				"( cd \"$BPM_SOURCE\" && fakeroot -s \"$BPM_WORKDIR\"/fakeroot_file bash -e -c '"+packageFunctionName+"' ) || exit 1\n") // Run package() function
+
+		cmd.Dir = tempDirectory
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		cmd.Env = append(env, "BPM_OUTPUT="+path.Join(tempDirectory, "output_"+pkg.Name))
+		if os.Getuid() == 0 {
+			cmd.SysProcAttr = &syscall.SysProcAttr{}
+			cmd.SysProcAttr.Credential = &syscall.Credential{Uid: uint32(uid), Gid: uint32(gid)}
+		}
+		err = cmd.Run()
+		if err != nil {
+			return nil, err
+		}
+
+		// Strip all ELF binaries
+		if !slices.Contains(pkg.Options, "nostrip") {
+			if _, err := exec.LookPath("strip"); err != nil {
+				fmt.Println("Skip stripping ELF binaries. 'strip' not in path")
+			} else {
+				fmt.Println("Stripping ELF binaries...")
+
+				err = filepath.WalkDir(path.Join(tempDirectory, "output_"+pkg.Name), func(path string, d fs.DirEntry, err error) error {
+					cmd = exec.Command("file", "-bi", path)
+					cmd.Stderr = os.Stderr
+					output, err := cmd.Output()
+					if err != nil {
+						return err
+					}
+
+					mimetype := strings.Split(string(output), ";")[0]
+
+					if strings.HasPrefix(mimetype, "application/x-executable") {
+						cmd := exec.Command("strip", path)
+						cmd.Stderr = os.Stderr
+						err = cmd.Run()
+						if err != nil {
+							return err
+						}
+						if verbose {
+							fmt.Printf("Stripped %s (%s)\n", path, mimetype)
+						}
+					} else if strings.HasPrefix(mimetype, "application/x-pie-executable") || strings.HasPrefix(mimetype, "application/x-sharedlib") {
+						cmd = exec.Command("file", "-b", path)
+						cmd.Stderr = os.Stderr
+						output, err = cmd.Output()
+						if err != nil {
+							return err
+						}
+						// Skip files that use ELF as a container format
+						if strings.Contains(string(output), "no machine") {
+							return nil
+						}
+
+						cmd := exec.Command("strip", "--strip-unneeded", path)
+						cmd.Stderr = os.Stderr
+						err = cmd.Run()
+						if err != nil {
+							return err
+						}
+						if verbose {
+							fmt.Printf("Stripped %s (%s)\n", path, mimetype)
+						}
+					} else if strings.HasPrefix(mimetype, "application/x-archive") {
+						cmd := exec.Command("strip", "--strip-debug", path)
+						cmd.Stderr = os.Stderr
+						err = cmd.Run()
+						if err != nil {
+							return err
+						}
+						if verbose {
+							fmt.Printf("Stripped %s (%s)\n", path, mimetype)
+						}
+					}
+
+					return nil
+				})
+				if err != nil {
+					return nil, err
+				}
+			}
+		}
+
+		// Generate package file list
+		fmt.Println("Generating package file list...")
+		cmd = exec.Command("bash", "-c", "fakeroot -i \"$BPM_WORKDIR\"/fakeroot_file find \"$BPM_OUTPUT\" -mindepth 1 -printf \"%P %#m %U %G %s\\n\" > \"$BPM_WORKDIR\"/pkg.files")
+		cmd.Dir = tempDirectory
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		cmd.Env = append(env, "BPM_OUTPUT="+path.Join(tempDirectory, "output_"+pkg.Name))
+		if os.Getuid() == 0 {
+			cmd.SysProcAttr = &syscall.SysProcAttr{}
+			cmd.SysProcAttr.Credential = &syscall.Credential{Uid: uint32(uid), Gid: uint32(gid)}
+		}
+		err = cmd.Run()
+		if err != nil {
+			return nil, err
+		}
+
+		// Create gzip-compressed archive for the package files
+		fmt.Println("Generating compressed file archive...")
+		cmd = exec.Command("bash", "-c", fmt.Sprintf("find %s -printf \"%%P\\n\" | fakeroot -i %s/fakeroot_file tar -czf files.tar.gz --no-recursion -C %s -T -", "output_"+pkg.Name, tempDirectory, "output_"+pkg.Name))
+		cmd.Dir = tempDirectory
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		cmd.Env = env
+		if os.Getuid() == 0 {
+			cmd.SysProcAttr = &syscall.SysProcAttr{}
+			cmd.SysProcAttr.Credential = &syscall.Credential{Uid: uint32(uid), Gid: uint32(gid)}
+		}
+		err = cmd.Run()
+		if err != nil {
+			return nil, fmt.Errorf("files.tar.gz archive could not be created: %s", err)
+		}
+
+		// Clone source package info
+		pkgInfo := *pkg
+
+		// Set package type to binary
+		pkgInfo.Type = "binary"
+
+		// Set package architecture
+		pkgInfo.Arch = pkg.OutputArch
+		pkgInfo.OutputArch = ""
+
+		// Remove split package and downloads fields
+		pkgInfo.SplitPackages = nil
+		pkgInfo.Downloads = nil
+
+		// Marshal package info
+		pkgInfoBytes, err := yaml.Marshal(pkgInfo)
+		if err != nil {
+			return nil, err
+		}
+		pkgInfoBytes = append(pkgInfoBytes, '\n')
+
+		// Create pkg.info file
+		err = os.WriteFile(path.Join(tempDirectory, "pkg.info"), pkgInfoBytes, 0644)
+		if err != nil {
+			return nil, err
+		}
+
+		// Change pkg.info file owner
+		err = os.Chown(path.Join(tempDirectory, "pkg.info"), uid, gid)
+		if err != nil {
+			return nil, err
+		}
+
+		// Get files to include in BPM archive
+		bpmArchiveFiles := make([]string, 0)
+		bpmArchiveFiles = append(bpmArchiveFiles, "pkg.info", "pkg.files", "files.tar.gz") // Base files
+		bpmArchiveFiles = append(bpmArchiveFiles, packageScripts...)                       // Package scripts
+
+		// Create final BPM archive
+		fmt.Println("Generating final BPM archive...")
+		cmd = exec.Command("bash", "-c", "tar -cf final-archive.bpm --owner=0 --group=0 -C \"$BPM_WORKDIR\" "+strings.Join(bpmArchiveFiles, " "))
+		cmd.Dir = tempDirectory
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		currentDir, err := os.Getwd()
+		if err != nil {
+			return nil, err
+		}
+		cmd.Env = append(env, "CURRENT_DIR="+currentDir)
+		if os.Getuid() == 0 {
+			cmd.SysProcAttr = &syscall.SysProcAttr{}
+			cmd.SysProcAttr.Credential = &syscall.Credential{Uid: uint32(uid), Gid: uint32(gid)}
+		}
+		err = cmd.Run()
+		if err != nil {
+			return nil, fmt.Errorf("BPM archive could not be created: %s", err)
+		}
+
+		// Remove pkg.info file
+		err = os.Remove(path.Join(tempDirectory, "pkg.info"))
+		if err != nil {
+			return nil, err
+		}
+
+		// Set output filename
+		outputFilename := path.Join(outputDirectory, fmt.Sprintf("%s-%s-%d-%s.bpm", pkgInfo.Name, pkgInfo.Version, pkgInfo.Revision, pkgInfo.Arch))
+
+		// Move final BPM archive
+		err = os.Rename(path.Join(tempDirectory, "final-archive.bpm"), outputFilename)
+		if err != nil {
+			return nil, err
+		}
+
+		// Set final BPM archive owner
+		err = os.Chown(outputFilename, os.Getuid(), os.Getgid())
+		if err != nil {
+			return nil, err
+		}
+
+		// Remove output directory
+		err = os.RemoveAll(path.Join(tempDirectory, "output_"+pkg.Name))
+		if err != nil {
+			return nil, err
+		}
+
+		outputBpmPackages[pkgInfo.Name] = outputFilename
+	}
+
+	// Delete temporary directory
+	if !keepCompilationFiles {
+		os.RemoveAll(tempDirectory)
+	}
+
+	return outputBpmPackages, nil
+}
+
+func downloadPackageFiles(pkgInfo *PackageInfo, tempDirectory string, verbose bool) error {
+	// Get UID and GID to use for compilation
+	var uid, gid int
+	if os.Getuid() == 0 {
+		_uid, err := strconv.ParseInt(rootCompilationUID, 10, 32)
+		if err != nil {
+			return fmt.Errorf("could not convert UID '%s' to int", rootCompilationUID)
+		}
+		_gid, err := strconv.ParseInt(rootCompilationGID, 10, 32)
+		if err != nil {
+			return fmt.Errorf("could not convert GID '%s' to int", rootCompilationGID)
+		}
+		uid = int(_uid)
+		gid = int(_gid)
+	} else {
+		uid = os.Getuid()
+		gid = os.Getgid()
+	}
+
+	for _, download := range pkgInfo.Downloads {
+		// Replace variables
+		replaceVars := func(s string) string {
+			switch s {
+			case "BPM_PKG_NAME":
+				return pkgInfo.Name
+			case "BPM_PKG_VERSION":
+				return pkgInfo.Version
+			case "BPM_PKG_URL":
+				return pkgInfo.Url
+			case "BPM_SOURCE":
+				return path.Join(tempDirectory, "source/")
+			default:
+				return ""
+			}
+		}
+
+		downloadUrl, err := envsubst.Eval(strings.TrimSpace(download.Url), replaceVars)
+		if err != nil {
+			return err
+		}
+		filepath, err := envsubst.Eval(strings.TrimSpace(download.Filepath), replaceVars)
+		if err != nil {
+			return err
+		}
+		extractTo, err := envsubst.Eval(strings.TrimSpace(download.ExtractTo), replaceVars)
+		if err != nil {
+			return err
+		}
+		cloneTo, err := envsubst.Eval(strings.TrimSpace(download.CloneTo), replaceVars)
+		if err != nil {
+			return err
+		}
+
+		// Make relative paths absolute
+		if extractTo != "" && extractTo[0] != '/' {
+			extractTo = path.Join(tempDirectory, extractTo)
+		}
+		// Make relative paths absolute
+		if cloneTo != "" && cloneTo[0] != '/' {
+			cloneTo = path.Join(tempDirectory, cloneTo)
+		}
+
+		switch download.Type {
+		case "", "file":
+			if filepath == "" {
+				filepath = path.Join(tempDirectory, path.Base(downloadUrl))
+			}
+			if filepath[0] != '/' {
+				filepath = path.Join(tempDirectory, filepath)
+			}
+
+			err := downloadFile("Downloading file "+path.Base(filepath), downloadUrl, filepath, 0644)
+			if err != nil {
+				return err
+			}
+
+			if download.Checksum != "skip" {
+				f, err := os.Open(filepath)
+				if err != nil {
+					return err
+				}
+				defer f.Close()
+
+				h := sha256.New()
+				_, err = io.Copy(h, f)
+				if err != nil {
+					return err
+				}
+
+				if hex.EncodeToString(h.Sum(nil)) != download.Checksum {
+					fmt.Printf("Downloaded file checksum: %x\n", h.Sum(nil))
+					return fmt.Errorf("downloaded file checksums did not match")
+				}
+			} else {
+				fmt.Println("Skipping checksum checking...")
+			}
+
+			// Change downloaded file ownership
+			err = os.Chown(filepath, uid, gid)
+			if err != nil {
+				return err
+			}
+
+			if !download.NoExtract && (strings.Contains(filepath, ".tar") || strings.HasSuffix(filepath, ".tgz")) {
+				cmd := exec.Command("tar", "xf", filepath, "--strip-components="+strconv.Itoa(download.ExtractStripComponents))
+				if verbose {
+					cmd.Args[1] = "xvf"
+				}
+				cmd.Dir = tempDirectory
+				if os.Getuid() == 0 {
+					cmd.SysProcAttr = &syscall.SysProcAttr{}
+					cmd.SysProcAttr.Credential = &syscall.Credential{Uid: uint32(uid), Gid: uint32(gid)}
+				}
+				if extractTo != "" {
+					err := os.MkdirAll(extractTo, 0755)
+					if err != nil {
+						return err
+					}
+					cmd.Args = append(cmd.Args, "-C", extractTo)
+				}
+
+				cmd.Stdout = os.Stdout
+				cmd.Stderr = os.Stderr
+
+				err := cmd.Run()
+				if err != nil {
+					return err
+				}
+			} else if !download.NoExtract && strings.HasSuffix(filepath, ".zip") {
+				cmd := exec.Command("unzip", filepath)
+				cmd.Dir = tempDirectory
+				if os.Getuid() == 0 {
+					cmd.SysProcAttr = &syscall.SysProcAttr{}
+					cmd.SysProcAttr.Credential = &syscall.Credential{Uid: uint32(uid), Gid: uint32(gid)}
+				}
+				if extractTo != "" {
+					err := os.MkdirAll(extractTo, 0755)
+					if err != nil {
+						return err
+					}
+					cmd.Args = append(cmd.Args, "-d", extractTo)
+				} else {
+					err := os.Mkdir(path.Join(tempDirectory, strings.TrimSuffix(path.Base(filepath), ".zip")), 0755)
+					if err != nil {
+						return err
+					}
+
+					cmd.Args = append(cmd.Args, "-d", path.Join(tempDirectory, strings.TrimSuffix(path.Base(filepath), ".zip")))
+				}
+
+				cmd.Stdout = os.Stdout
+				cmd.Stderr = os.Stderr
+
+				err := cmd.Run()
+				if err != nil {
+					return err
+				}
+			}
+		case "git":
+			// Replace variables in git branch
+			gitBranch := download.GitBranch
+			gitBranch, err := envsubst.Eval(gitBranch, func(s string) string {
+				switch s {
+				case "BPM_PKG_NAME":
+					return pkgInfo.Name
+				case "BPM_PKG_VERSION":
+					return pkgInfo.Version
+				case "BPM_PKG_URL":
+					return pkgInfo.Url
+				default:
+					return ""
+				}
+			})
+			if err != nil {
+				return err
+			}
+
+			cmd := exec.Command("git", "clone", "--depth=1", downloadUrl)
+			cmd.Dir = tempDirectory
+			if os.Getuid() == 0 {
+				cmd.SysProcAttr = &syscall.SysProcAttr{}
+				cmd.SysProcAttr.Credential = &syscall.Credential{Uid: uint32(uid), Gid: uint32(gid)}
+			}
+			if gitBranch != "" {
+				cmd.Args = slices.Insert(cmd.Args, len(cmd.Args)-1, "--branch="+gitBranch)
+			}
+			if cloneTo != "" {
+				err := os.MkdirAll(cloneTo, 0755)
+				if err != nil {
+					return err
+				}
+				cmd.Args = append(cmd.Args, cloneTo)
+			}
+
+			cmd.Stdout = os.Stdout
+			cmd.Stderr = os.Stderr
+
+			err = cmd.Run()
+			if err != nil {
+				return err
+			}
+
+			if download.Checksum != "skip" {
+				cmd := exec.Command("git", "rev-parse", "HEAD")
+				if cloneTo != "" {
+					cmd.Dir = cloneTo
+				} else {
+					cmd.Dir = path.Join(tempDirectory, strings.TrimSuffix(path.Base(downloadUrl), ".git"))
+				}
+
+				branchChecksum, err := cmd.Output()
+				if err != nil {
+					return err
+				}
+
+				if strings.TrimSpace(string(branchChecksum)) != download.Checksum {
+					fmt.Printf("Git branch checksum: %s\n", strings.TrimSpace(string(branchChecksum)))
+					return fmt.Errorf("Cloned git repository checksum did not match")
+				}
+			} else {
+				fmt.Println("Skipping checksum checking...")
+			}
+		default:
+			return fmt.Errorf("unknown download type (%s)", download.Type)
+		}
+	}
+
+	return nil
+}
+
+func showPackageFiles(archiveFilename string) error {
+	// Read BPM archive
+	bpmpkg, err := ReadPackage(archiveFilename)
+	if err != nil {
+		return err
+	}
+
+	// Ensure package type is 'source'
+	if bpmpkg.PkgInfo.Type != "source" {
+		return fmt.Errorf("cannot compile a non-source package")
+	}
+
+	printTarballContent := func(filename string) error {
+		// Get tarball reader for file
+		reader, err := readTarballFile(archiveFilename, filename)
+		if err != nil {
+			return err
+		}
+
+		// Read file content
+		data, err := io.ReadAll(reader.tarReader)
+		if err != nil {
+			return err
+		}
+
+		// Print file name and content
+		fmt.Println("==============================")
+		fmt.Printf("%s: %s\n", bpmpkg.PkgInfo.Name, filename)
+		fmt.Println("==============================")
+		fmt.Printf("%s\n", data)
+
+		// Close reader
+		err = reader.file.Close()
+		if err != nil {
+			return err
+		}
+
+		return nil
+	}
+
+	// Print pkg.info content
+	err = printTarballContent("pkg.info")
+	if err != nil {
+		return err
+	}
+
+	// Print source files contents
+	files, err := listTarballContent(archiveFilename)
+	if err != nil {
+		return err
+	}
+	for _, file := range files {
+		if !strings.HasPrefix(file, "source-files/") {
+			continue
+		}
+
+		// Print source file content
+		err = printTarballContent(file)
+		if err != nil {
+			return err
+		}
+	}
+
+	// Print source.sh content
+	err = printTarballContent("source.sh")
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

src/bpmlib/config.go

@@ -0,0 +1,74 @@
+package bpmlib
+
+import (
+	"os"
+
+	"gopkg.in/yaml.v3"
+)
+
+type MainBPMConfigStruct struct {
+	IgnorePackages            []string         `yaml:"ignore_packages"`
+	IgnorePaths               []string         `yaml:"ignore_paths"`
+	ShowSourcePackageContents string           `yaml:"show_source_package_contents"`
+	CleanupMakeDependencies   bool             `yaml:"cleanup_make_dependencies"`
+	Databases                 []configDatabase `yaml:"databases"`
+}
+
+type configDatabase struct {
+	Name              string `yaml:"name"`
+	Source            string `yaml:"source"`
+	VerificationLevel string `yaml:"verification_level"`
+	Disabled          *bool  `yaml:"disabled"`
+}
+
+type CompilationBPMConfigStruct struct {
+	PrivilegeEscalatorCmd  string   `yaml:"privilege_escalator_cmd"`
+	CompilationJobs        int      `yaml:"compilation_jobs"`
+	CompilationEnvironment []string `yaml:"compilation_env"`
+}
+
+var MainBPMConfig MainBPMConfigStruct
+var CompilationBPMConfig CompilationBPMConfigStruct
+
+func ReadConfig() (err error) {
+	var file *os.File
+
+	// Set default config options
+	MainBPMConfig = MainBPMConfigStruct{
+		ShowSourcePackageContents: "always",
+		CleanupMakeDependencies:   true,
+	}
+
+	// Read main BPM config
+	file, err = os.Open("/etc/bpm.conf")
+	if err != nil {
+		return err
+	}
+	err = yaml.NewDecoder(file).Decode(&MainBPMConfig)
+	if err != nil {
+		return err
+	}
+	file.Close()
+
+	// Read compilation BPM config
+	if _, err := os.Stat("/etc/bpm-compilation.conf"); err == nil {
+		file, err = os.Open("/etc/bpm-compilation.conf")
+		if err != nil {
+			return err
+		}
+		err = yaml.NewDecoder(file).Decode(&CompilationBPMConfig)
+		if err != nil {
+			return err
+		}
+		file.Close()
+	}
+
+	// Remove disabled databases from memory
+	for i := len(MainBPMConfig.Databases) - 1; i >= 0; i-- {
+		if MainBPMConfig.Databases[i].Disabled != nil && *MainBPMConfig.Databases[i].Disabled {
+			MainBPMConfig.Databases = append(MainBPMConfig.Databases[:i], MainBPMConfig.Databases[i+1:]...)
+		}
+	}
+
+	return nil
+}

src/bpmlib/databases.go

@@ -0,0 +1,597 @@
+package bpmlib
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"maps"
+	"net/http"
+	"net/url"
+	"os"
+	"path"
+	"slices"
+	"strconv"
+	"strings"
+
+	"gopkg.in/yaml.v3"
+)
+
+type VerificationLevel int
+
+const (
+	VerificationLevelNone VerificationLevel = iota
+	VerificationLevelAll
+	VerificationLevelTrusted
+)
+
+type BPMDatabase struct {
+	DatabaseVersion   int                          `yaml:"database_version"`
+	Entries           map[string]*BPMDatabaseEntry `yaml:"entries"`
+	VirtualPackages   map[string][]*BPMDatabaseEntry
+	Name              string
+	VerificationLevel VerificationLevel
+	Source            string
+}
+
+type BPMDatabaseEntry struct {
+	Info          *PackageInfo `yaml:"info"`
+	Filepath      string       `yaml:"filepath"`
+	DownloadSize  int64        `yaml:"download_size"`
+	InstalledSize int64        `yaml:"installed_size"`
+	Database      *BPMDatabase
+}
+
+var BPMDatabases = make(map[string]*BPMDatabase)
+
+func (db *BPMDatabase) ContainsPackage(pkg string) bool {
+	_, ok := db.Entries[pkg]
+	return ok
+}
+
+func (db *configDatabase) ReadLocalDatabase() error {
+	dbFile := "/var/lib/bpm/databases/" + db.Name + ".bpmdb"
+	if _, err := os.Stat(dbFile); err != nil {
+		return nil
+	}
+
+	bytes, err := os.ReadFile(dbFile)
+	if err != nil {
+		return err
+	}
+
+	// Unmarshal yaml
+	database := &BPMDatabase{}
+	err = yaml.Unmarshal(bytes, database)
+	if err != nil {
+		return err
+	}
+
+	// Initialize struct values
+	database.VirtualPackages = make(map[string][]*BPMDatabaseEntry)
+	database.Name = db.Name
+	switch db.VerificationLevel {
+	case "0", "none":
+		database.VerificationLevel = VerificationLevelNone
+	case "1", "all":
+		database.VerificationLevel = VerificationLevelAll
+	case "2", "trusted":
+		database.VerificationLevel = VerificationLevelTrusted
+	default:
+		database.VerificationLevel = VerificationLevelAll
+	}
+	database.Source = db.Source
+
+	for entryName, entry := range database.Entries {
+		entry.Database = database
+
+		if entry.Info.IsSplitPackage() {
+			delete(database.Entries, entryName)
+
+			// Handle split packages
+			for _, splitPkg := range entry.Info.SplitPackages {
+				// Turn split package into json data
+				splitPkgJson, err := yaml.Marshal(splitPkg)
+				if err != nil {
+					return err
+				}
+
+				// Clone all main package fields onto split package
+				splitPkgClone := *entry.Info
+
+				// Set split package field of split package to nil
+				splitPkgClone.SplitPackages = nil
+
+				// Unmarshal json data back to struct
+				err = yaml.Unmarshal(splitPkgJson, &splitPkgClone)
+				if err != nil {
+					return err
+				}
+
+				// Force set split package version, revision and URL
+				splitPkgClone.Version = entry.Info.Version
+				splitPkgClone.Revision = entry.Info.Revision
+				splitPkgClone.Url = entry.Info.Url
+
+				// Create entry for split package
+				database.Entries[splitPkg.Name] = &BPMDatabaseEntry{
+					Info:          &splitPkgClone,
+					Filepath:      entry.Filepath,
+					DownloadSize:  entry.DownloadSize,
+					InstalledSize: 0,
+					Database:      database,
+				}
+
+				// Add virtual packages to database
+				for _, p := range splitPkg.Provides {
+					database.VirtualPackages[p] = append(database.VirtualPackages[p], database.Entries[splitPkg.Name])
+				}
+			}
+		} else {
+			// Add virtual packages to database
+			for _, p := range entry.Info.Provides {
+				database.VirtualPackages[p] = append(database.VirtualPackages[p], entry)
+			}
+		}
+	}
+
+	BPMDatabases[db.Name] = database
+
+	return nil
+}
+
+func (db *configDatabase) SyncLocalDatabaseFile() error {
+	dbFile := "/var/lib/bpm/databases/" + db.Name + ".bpmdb"
+
+	// Get URL to database
+	u, err := url.JoinPath(db.Source, "database.bpmdb")
+	if err != nil {
+		return err
+	}
+
+	// Retrieve data from URL
+	req, err := http.NewRequest("GET", u, nil)
+	if err != nil {
+		return err
+	}
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	// Create progress bar
+	bar := createProgressBar(resp.ContentLength, "Syncing "+db.Name, false)
+
+	// Copy data
+	var buffer bytes.Buffer
+	_, err = io.Copy(io.MultiWriter(&buffer, bar), resp.Body)
+	if err != nil {
+		return err
+	}
+
+	// Unmarshal data to ensure it is a valid BPM database
+	err = yaml.Unmarshal(buffer.Bytes(), &BPMDatabase{})
+	if err != nil {
+		return fmt.Errorf("could not decode database: %s", err)
+	}
+
+	// Create parent directories to database file
+	err = os.MkdirAll(path.Dir(dbFile), 0755)
+	if err != nil {
+		return err
+	}
+
+	// Create file and save database data
+	out, err := os.Create(dbFile)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	_, err = out.Write(buffer.Bytes())
+
+	return nil
+}
+
+func ReadLocalDatabaseFiles() (err error) {
+	for _, db := range MainBPMConfig.Databases {
+		// Read database
+		err = db.ReadLocalDatabase()
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func GetDatabaseEntry(str string) (*BPMDatabaseEntry, *BPMDatabase, error) {
+	split := strings.Split(str, "/")
+	if len(split) == 1 {
+		pkgName := strings.TrimSpace(split[0])
+		if pkgName == "" {
+			return nil, nil, errors.New("could not find database entry for this package")
+		}
+		for _, db := range BPMDatabases {
+			if db.ContainsPackage(pkgName) {
+				return db.Entries[pkgName], db, nil
+			}
+		}
+		return nil, nil, errors.New("could not find database entry for this package")
+	} else if len(split) == 2 {
+		dbName := strings.TrimSpace(split[0])
+		pkgName := strings.TrimSpace(split[1])
+		if dbName == "" || pkgName == "" {
+			return nil, nil, errors.New("could not find database entry for this package")
+		}
+		db := BPMDatabases[dbName]
+		if db == nil || !db.ContainsPackage(pkgName) {
+			return nil, nil, errors.New("could not find database entry for this package")
+		}
+		return db.Entries[pkgName], db, nil
+	} else {
+		return nil, nil, errors.New("could not find database entry for this package")
+	}
+}
+
+func FindReplacement(pkg string) *BPMDatabaseEntry {
+	for _, db := range BPMDatabases {
+		for _, entry := range db.Entries {
+			for _, replaced := range entry.Info.Replaces {
+				if replaced == pkg {
+					return entry
+				}
+			}
+		}
+	}
+
+	return nil
+}
+
+func GetDatabaseVirtualPackageEntry(vpkg string) (providers []*BPMDatabaseEntry) {
+	for _, db := range BPMDatabases {
+		providers = append(providers, db.VirtualPackages[vpkg]...)
+	}
+
+	slices.SortFunc(providers, func(a, b *BPMDatabaseEntry) int {
+		return strings.Compare(a.Info.Name, b.Info.Name)
+	})
+
+	return providers
+}
+
+func (db *BPMDatabase) FetchPackage(pkg string) (string, error) {
+	// Check if package exists in database
+	if !db.ContainsPackage(pkg) {
+		return "", errors.New("could not fetch package '" + pkg + "'")
+	}
+
+	// Get package url from database
+	entry := db.Entries[pkg]
+	u, err := url.JoinPath(db.Source, entry.Filepath)
+	if err != nil {
+		return "", err
+	}
+
+	// Download package from url
+	filepath := path.Join("/var/cache/bpm/fetched/", path.Base(entry.Filepath))
+	err = downloadFile("Downloading "+entry.Info.Name, u, filepath, 0644)
+	if err != nil {
+		return "", err
+	}
+
+	// Download and verify signature if required
+	if db.VerificationLevel != VerificationLevelNone {
+		err = downloadFile("", u+".sig", filepath+".sig", 0644)
+		if err != nil {
+			return "", err
+		}
+
+		err := VerifySignature(filepath, filepath+".sig", db.VerificationLevel == VerificationLevelTrusted, "/")
+		if err != nil {
+			return "", fmt.Errorf("Could not verify signature for %s: %s", filepath, err)
+		}
+	}
+
+	return filepath, nil
+}
+
+func (entry *BPMDatabaseEntry) GetEntryDependants() (dependants []string) {
+	dependantsMap := make(map[string][]string)
+
+	// Loop through all entries
+	for _, db := range BPMDatabases {
+		for _, e := range db.Entries {
+			// Skip iteration if comparing the same packages
+			if e.Info.Name == entry.Info.Name {
+				continue
+			}
+
+			// Add installed package to list if its dependencies include pkgName
+			if slices.ContainsFunc(e.Info.Depends, func(n string) bool {
+				n, _, _ = SplitPkgNameAndVersion(n)
+				return n == entry.Info.Name
+			}) {
+				dependantsMap[e.Info.Name] = append(dependantsMap[e.Info.Name], db.Name)
+				continue
+			}
+
+			// Add installed package to list if its runtime dependencies include pkgName
+			if slices.ContainsFunc(e.Info.RuntimeDepends, func(n string) bool {
+				n, _, _ = SplitPkgNameAndVersion(n)
+				return n == entry.Info.Name
+			}) {
+				dependantsMap[e.Info.Name] = append(dependantsMap[e.Info.Name], db.Name)
+				continue
+			}
+
+			// Loop through each virtual package
+			for _, vpkg := range entry.Info.Provides {
+				// Add installed package to list if its dependencies contain a provided virtual package
+				if slices.ContainsFunc(e.Info.Depends, func(n string) bool {
+					n, _, _ = SplitPkgNameAndVersion(n)
+					return n == vpkg
+				}) {
+					dependantsMap[e.Info.Name] = append(dependantsMap[e.Info.Name], db.Name)
+					break
+				}
+
+				// Add installed package to list if its runtime dependencies contain a provided virtual package
+				if slices.ContainsFunc(e.Info.RuntimeDepends, func(n string) bool {
+					n, _, _ = SplitPkgNameAndVersion(n)
+					return n == vpkg
+				}) {
+					dependantsMap[e.Info.Name] = append(dependantsMap[e.Info.Name], db.Name)
+					break
+				}
+			}
+		}
+	}
+
+	// Get keys
+	keySlice := slices.Collect(maps.Keys(dependantsMap))
+	slices.Sort(keySlice)
+
+	// Add all dependant entries to slice in alphabetical order
+	for _, entryName := range keySlice {
+		dbs := dependantsMap[entryName]
+		if len(dbs) > 1 {
+			for _, db := range dbs {
+				dependants = append(dependants, db+"/"+entryName)
+			}
+		} else {
+			dependants = append(dependants, entryName)
+		}
+	}
+
+	return dependants
+}
+
+func (entry *BPMDatabaseEntry) GetEntryOptionalDependants() (dependants []string) {
+	dependantsMap := make(map[string][]string)
+	for _, db := range BPMDatabases {
+		for _, e := range db.Entries {
+			if slices.ContainsFunc(e.Info.OptionalDepends, func(n string) bool {
+				// Remove optional dependency comment
+				n = strings.SplitN(n, ":", 2)[0]
+
+				// Remove required version
+				n, _, _ = SplitPkgNameAndVersion(n)
+
+				return n == entry.Info.Name
+			}) {
+				dependantsMap[e.Info.Name] = append(dependantsMap[e.Info.Name], e.Database.Name)
+			}
+		}
+	}
+
+	// Get keys
+	keySlice := slices.Collect(maps.Keys(dependantsMap))
+	slices.Sort(keySlice)
+
+	// Add all dependant entries to slice in alphabetical order
+	for _, entryName := range keySlice {
+		dbs := dependantsMap[entryName]
+		if len(dbs) > 1 {
+			for _, db := range dbs {
+				dependants = append(dependants, db+"/"+entryName)
+			}
+		} else {
+			dependants = append(dependants, entryName)
+		}
+	}
+
+	return dependants
+}
+
+func (entry *BPMDatabaseEntry) GetEntryMakeDependants() (dependants []string) {
+	dependantsMap := make(map[string][]string)
+	for _, db := range BPMDatabases {
+		for _, e := range db.Entries {
+			if slices.ContainsFunc(e.Info.MakeDepends, func(n string) bool {
+				n, _, _ = SplitPkgNameAndVersion(n)
+				return n == entry.Info.Name
+			}) {
+				dependantsMap[e.Info.Name] = append(dependantsMap[e.Info.Name], e.Database.Name)
+			}
+		}
+	}
+
+	// Get keys
+	keySlice := slices.Collect(maps.Keys(dependantsMap))
+	slices.Sort(keySlice)
+
+	// Add all dependant entries to slice in alphabetical order
+	for _, entryName := range keySlice {
+		dbs := dependantsMap[entryName]
+		if len(dbs) > 1 {
+			for _, db := range dbs {
+				dependants = append(dependants, db+"/"+entryName)
+			}
+		} else {
+			dependants = append(dependants, entryName)
+		}
+	}
+
+	return dependants
+}
+
+func (entry *BPMDatabaseEntry) CreateReadableInfo(rootDir string, showBytes bool) string {
+	builder := strings.Builder{}
+	builderWriteStringNotEmpty := func(label string, value string) {
+		if value != "" {
+			builder.WriteString(label + ": " + value + "\n")
+		}
+	}
+	builderWriteArray := func(label string, array []string, sort bool) {
+		if len(array) == 0 {
+			return
+		}
+
+		// Sort array
+		if sort {
+			slices.Sort(array)
+		}
+
+		builder.WriteString(label + " (" + strconv.Itoa(len(array)) + "):\n")
+		for _, val := range array {
+			builder.WriteString("  - " + val + "\n")
+		}
+	}
+	builderWriteDependencyArray := func(label string, depends []string) {
+		if len(depends) == 0 {
+			return
+		}
+
+		// Sort array
+		slices.Sort(depends)
+
+		builder.WriteString(label + " (" + strconv.Itoa(len(depends)) + "):\n")
+		for _, val := range depends {
+			builder.WriteString("  - " + val)
+
+			// Show virtual package providers
+			if providers := GetDatabaseVirtualPackageEntry(val); len(providers) > 0 {
+				builder.WriteString(" (")
+				for i, vpkg := range providers {
+					if i == len(providers)-1 {
+						builder.WriteString(vpkg.Info.Name)
+					} else {
+						builder.WriteString(vpkg.Info.Name + ", ")
+					}
+				}
+				builder.WriteString(")")
+			}
+
+			builder.WriteString("\n")
+		}
+	}
+
+	// Main information
+	builder.WriteString("Name: " + entry.Info.Name + "\n")
+	builder.WriteString("Database: " + entry.Database.Name + "\n")
+	builder.WriteString("Description: " + entry.Info.Description + "\n")
+	builder.WriteString("Version: " + entry.Info.GetFullVersion() + "\n")
+	builderWriteStringNotEmpty("URL", entry.Info.Url)
+	builderWriteStringNotEmpty("License", entry.Info.License)
+	builderWriteArray("Maintainers", entry.Info.Maintainers, false)
+	builder.WriteString("Architecture: " + entry.Info.Arch + "\n")
+	if entry.Info.Type == "source" && entry.Info.OutputArch != "" && entry.Info.OutputArch != GetArch() {
+		builder.WriteString("Output architecture: " + entry.Info.OutputArch + "\n")
+	}
+	builder.WriteString("Type: " + entry.Info.Type + "\n")
+
+	// Dependencies
+	builderWriteDependencyArray("Dependencies", entry.Info.Depends)
+	if entry.Info.Type == "source" {
+		builderWriteDependencyArray("Make dependencies", entry.Info.MakeDepends)
+		builderWriteDependencyArray("Check dependencies", entry.Info.CheckDepends)
+	}
+	builderWriteDependencyArray("Runtime dependencies", entry.Info.RuntimeDepends)
+	if len(entry.Info.OptionalDepends) > 0 {
+		builder.WriteString("Optional dependencies: (" + strconv.Itoa(len(entry.Info.OptionalDepends)) + ")\n")
+		for _, depend := range entry.Info.OptionalDepends {
+			dependSplit := strings.SplitN(depend, ":", 2)
+			if len(dependSplit) == 2 {
+				builder.WriteString(fmt.Sprintf("  - %s (%s)", dependSplit[0], dependSplit[1]))
+			} else {
+				builder.WriteString("  - " + dependSplit[0])
+			}
+
+			// Show virtual package providers
+			if providers := GetDatabaseVirtualPackageEntry(dependSplit[0]); len(providers) > 0 {
+				builder.WriteString(" (")
+				for i, vpkg := range providers {
+					if i == len(providers)-1 {
+						builder.WriteString(vpkg.Info.Name)
+					} else {
+						builder.WriteString(vpkg.Info.Name + ", ")
+					}
+				}
+				builder.WriteString(")")
+			}
+
+			builder.WriteString("\n")
+		}
+	}
+	builderWriteArray("Dependant packages", entry.GetEntryDependants(), true)
+	builderWriteArray("Optionally dependant packages", entry.GetEntryOptionalDependants(), true)
+	builderWriteArray("Make dependant packages", entry.GetEntryMakeDependants(), true)
+
+	// Other package relations
+	builderWriteArray("Conflicting packages", entry.Info.Conflicts, true)
+	builderWriteArray("Provided packages", entry.Info.Provides, true)
+	builderWriteArray("Replaces packages", entry.Info.Replaces, true)
+
+	// Split packages
+	if entry.Info.Type == "source" && len(entry.Info.SplitPackages) != 0 {
+		splitPkgs := make([]string, len(entry.Info.SplitPackages))
+		for i, splitPkgInfo := range entry.Info.SplitPackages {
+			splitPkgs[i] = splitPkgInfo.Name
+		}
+		builderWriteArray("Split packages", splitPkgs, true)
+	}
+
+	// Installation reason
+	if rootDir != "" && IsPackageInstalled(entry.Info.Name, rootDir) {
+		installationReason := GetPackage(entry.Info.Name, rootDir).LocalInfo.GetInstallationReason()
+		var installationReasonString string
+		switch installationReason {
+		case InstallationReasonManual:
+			installationReasonString = "Manual"
+		case InstallationReasonDependency:
+			installationReasonString = "Dependency"
+		case InstallationReasonMakeDependency:
+			installationReasonString = "Make dependency"
+		default:
+			installationReasonString = "Unknown"
+		}
+		builder.WriteString("Installation reason: " + installationReasonString + "\n")
+	}
+
+	// Download size
+	downloadSize := entry.DownloadSize
+	var downloadSizeStr string
+	if showBytes {
+		downloadSizeStr = strconv.FormatInt(downloadSize, 10)
+	} else {
+		downloadSizeStr = BytesToHumanReadable(downloadSize)
+	}
+	builder.WriteString("Download size: " + downloadSizeStr + "\n")
+
+	// Installed size
+	if entry.Info.Type == "binary" {
+		installedSize := entry.InstalledSize
+		var installedSizeStr string
+		if showBytes {
+			installedSizeStr = strconv.FormatInt(installedSize, 10)
+		} else {
+			installedSizeStr = BytesToHumanReadable(installedSize)
+		}
+		builder.WriteString("Installed size: " + installedSizeStr + "\n")
+	}
+
+	return strings.TrimSpace(builder.String())
+}

src/bpmlib/dependencies.go

@@ -0,0 +1,247 @@
+package bpmlib
+
+import (
+	"slices"
+	"strings"
+)
+
+func (pkgInfo *PackageInfo) GetPackageDependants(rootDir string, skipMultipleProviders bool) (dependants []string) {
+	// Get installed package names
+	pkgs, ok := localPackageInformation[rootDir]
+	if !ok {
+		return nil
+	}
+
+	// Loop through all installed packages
+	for _, installedPkg := range pkgs {
+		// Skip iteration if comparing the same packages
+		if installedPkg.Name == pkgInfo.Name {
+			continue
+		}
+
+		// Add installed package to list if its dependencies include pkgName
+		if slices.ContainsFunc(installedPkg.Depends, func(n string) bool {
+			n, _, _ = SplitPkgNameAndVersion(n)
+			return n == pkgInfo.Name
+		}) {
+			dependants = append(dependants, installedPkg.Name)
+			continue
+		}
+
+		// Add installed package to list if its runtime dependencies include pkgName
+		if slices.ContainsFunc(installedPkg.RuntimeDepends, func(n string) bool {
+			n, _, _ = SplitPkgNameAndVersion(n)
+			return n == pkgInfo.Name
+		}) {
+			dependants = append(dependants, installedPkg.Name)
+			continue
+		}
+
+		// Loop through each virtual package
+		for _, vpkg := range pkgInfo.Provides {
+			if skipMultipleProviders && len(GetVirtualPackageInfo(vpkg, rootDir)) > 1 {
+				continue
+			}
+
+			// Add installed package to list if its dependencies contain a provided virtual package
+			if slices.ContainsFunc(installedPkg.Depends, func(n string) bool {
+				n, _, _ = SplitPkgNameAndVersion(n)
+				return n == vpkg
+			}) {
+				dependants = append(dependants, installedPkg.Name)
+				break
+			}
+
+			// Add installed package to list if its runtime dependencies contain a provided virtual package
+			if slices.ContainsFunc(installedPkg.RuntimeDepends, func(n string) bool {
+				n, _, _ = SplitPkgNameAndVersion(n)
+				return n == vpkg
+			}) {
+				dependants = append(dependants, installedPkg.Name)
+				break
+			}
+		}
+	}
+
+	return dependants
+}
+
+func (pkgInfo *PackageInfo) GetPackageOptionalDependants(rootDir string) (dependants []string) {
+	// Get installed package names
+	pkgs, ok := localPackageInformation[rootDir]
+	if !ok {
+		return nil
+	}
+
+	// Loop through all installed packages
+	for _, installedPkg := range pkgs {
+		// Skip iteration if comparing the same packages
+		if installedPkg.Name == pkgInfo.Name {
+			continue
+		}
+
+		// Add installed package to list if its optional dependencies include pkgName
+		if slices.ContainsFunc(installedPkg.OptionalDepends, func(n string) bool {
+			// Remove optional dependency comment
+			n = strings.SplitN(n, ":", 2)[0]
+
+			// Remove required version
+			n, _, _ = SplitPkgNameAndVersion(n)
+
+			return n == pkgInfo.Name
+		}) {
+			dependants = append(dependants, installedPkg.Name)
+			continue
+		}
+
+		// Loop through each virtual package
+		for _, vpkg := range pkgInfo.Provides {
+			// Add installed package to list if its optional dependencies contain a provided virtual package
+			if slices.ContainsFunc(installedPkg.OptionalDepends, func(n string) bool {
+				// Remove optional dependency comment
+				n = strings.SplitN(n, ":", 2)[0]
+
+				// Remove required version
+				n, _, _ = SplitPkgNameAndVersion(n)
+
+				return n == vpkg
+			}) {
+				dependants = append(dependants, installedPkg.Name)
+				break
+			}
+		}
+	}
+
+	return dependants
+}
+
+type ResolvedPackage struct {
+	DatabaseEntry      *BPMDatabaseEntry
+	InstallationReason InstallationReason
+}
+
+func ResolveDependencies(pkgInfo *PackageInfo, resolvedVirtualPackages map[string]string, includeRuntimeDepends bool, rootDir string) (resolved []ResolvedPackage, unresolved []string) {
+	visited := make([]string, 0)
+
+	var dfs func(resolvedPkg *PackageInfo)
+	dfs = func(pkgInfo *PackageInfo) {
+		checkDependencies := func(dependencies []string, installationReason InstallationReason) {
+			for _, depend := range dependencies {
+				// Split dependency name and required version
+				dependName, _, _ := SplitPkgNameAndVersion(depend)
+
+				// Ignore if package is already installed
+				if IsPackageInstalled(dependName, rootDir) && EvaluateDependency(depend, GetPackageInfo(dependName, rootDir).Version) {
+					continue
+				} else if providers := GetVirtualPackageInfo(dependName, rootDir); len(providers) > 0 {
+					continue
+				}
+
+				// Find database entry for dependency
+				var dependEntry *BPMDatabaseEntry
+				if resolvedVpkg, ok := resolvedVirtualPackages[dependName]; ok {
+					dependEntry, _, _ = GetDatabaseEntry(resolvedVpkg)
+				} else if entry, _, _ := GetDatabaseEntry(dependName); entry != nil {
+					dependEntry = entry
+				} else if providers := GetDatabaseVirtualPackageEntry(dependName); len(providers) > 0 {
+					dependEntry = providers[0]
+				}
+
+				if dependEntry == nil {
+					unresolved = append(unresolved, depend)
+					continue
+				}
+
+				// Ensure entry has required version
+				if !EvaluateDependency(depend, dependEntry.Info.Version) {
+					unresolved = append(unresolved, depend)
+					continue
+				}
+
+				// Skip ignored packages in config
+				if slices.Contains(MainBPMConfig.IgnorePackages, dependEntry.Info.Name) {
+					continue
+				}
+
+				if !slices.Contains(visited, dependEntry.Info.Name) {
+					dfs(dependEntry.Info)
+					resolved = append(resolved, ResolvedPackage{DatabaseEntry: dependEntry, InstallationReason: installationReason})
+				}
+			}
+		}
+
+		visited = append(visited, pkgInfo.Name)
+
+		checkDependencies(pkgInfo.Depends, InstallationReasonDependency)
+		if includeRuntimeDepends {
+			checkDependencies(pkgInfo.RuntimeDepends, InstallationReasonDependency)
+		}
+		if pkgInfo.Type == "source" {
+			checkDependencies(pkgInfo.MakeDepends, InstallationReasonMakeDependency)
+			checkDependencies(pkgInfo.CheckDepends, InstallationReasonMakeDependency)
+		}
+	}
+
+	dfs(pkgInfo)
+
+	return resolved, unresolved
+}
+
+func SplitPkgNameAndVersion(pkg string) (string, string, string) {
+	if strings.Contains(pkg, ">=") {
+		pkgSplit := strings.SplitN(pkg, ">=", 2)
+		pkgName := pkgSplit[0]
+		pkgVersion := pkgSplit[1]
+
+		return pkgName, ">=", pkgVersion
+	} else if strings.Contains(pkg, ">") {
+		pkgSplit := strings.SplitN(pkg, ">", 2)
+		pkgName := pkgSplit[0]
+		pkgVersion := pkgSplit[1]
+
+		return pkgName, ">", pkgVersion
+	} else if strings.Contains(pkg, "<=") {
+		pkgSplit := strings.SplitN(pkg, "<=", 2)
+		pkgName := pkgSplit[0]
+		pkgVersion := pkgSplit[1]
+
+		return pkgName, "<=", pkgVersion
+	} else if strings.Contains(pkg, "<") {
+		pkgSplit := strings.SplitN(pkg, "<", 2)
+		pkgName := pkgSplit[0]
+		pkgVersion := pkgSplit[1]
+
+		return pkgName, "<", pkgVersion
+	} else if strings.Contains(pkg, "=") {
+		pkgSplit := strings.SplitN(pkg, "=", 2)
+		pkgName := pkgSplit[0]
+		pkgVersion := pkgSplit[1]
+
+		return pkgName, "=", pkgVersion
+	}
+
+	return pkg, "", ""
+}
+
+func EvaluateDependency(pkg, matchVersion string) bool {
+	_, comparisonSymbol, pkgVersion := SplitPkgNameAndVersion(pkg)
+
+	switch comparisonSymbol {
+	case ">=":
+		return CompareVersions(matchVersion, pkgVersion) >= 0
+	case ">":
+		return CompareVersions(matchVersion, pkgVersion) > 0
+	case "<=":
+		return CompareVersions(matchVersion, pkgVersion) <= 0
+	case "<":
+		return CompareVersions(matchVersion, pkgVersion) < 0
+	case "=":
+		if cutPkgVersion, ok := strings.CutSuffix(pkgVersion, "*"); ok {
+			return strings.HasPrefix(matchVersion, cutPkgVersion)
+		} else {
+			return CompareVersions(matchVersion, pkgVersion) == 0
+		}
+	default:
+		return true
+	}
+}

src/bpmlib/errors.go

@@ -0,0 +1,54 @@
+package bpmlib
+
+import (
+	"fmt"
+	"slices"
+	"strings"
+)
+
+type PackageNotFoundErr struct {
+	packages []string
+}
+
+func (e PackageNotFoundErr) Error() string {
+	slices.Sort(e.packages)
+	return "The following packages were not found in any databases: " + strings.Join(e.packages, ", ")
+}
+
+type DependencyNotFoundErr struct {
+	dependencies []string
+}
+
+func (e DependencyNotFoundErr) Error() string {
+	slices.Sort(e.dependencies)
+	return "The following dependencies were not found in any databases: " + strings.Join(e.dependencies, ", ")
+}
+
+type PackageConflictErr struct {
+	pkg       string
+	conflicts []string
+}
+
+func (e PackageConflictErr) Error() string {
+	slices.Sort(e.conflicts)
+	return fmt.Sprintf("Package (%s) is in conflict with the following packages: %s", e.pkg, strings.Join(e.conflicts, ", "))
+
+}
+
+type PackageScriptErr struct {
+	err           error
+	packageName   string
+	packageScript string
+}
+
+func (e PackageScriptErr) Error() string {
+	return fmt.Sprintf("could not execute package script (%s) for package (%s): %s", e.packageScript, e.packageName, e.err)
+}
+
+type PackageRemovalDependencyErr struct {
+	RequiredPackages map[string][]string
+}
+
+func (e PackageRemovalDependencyErr) Error() string {
+	return "removing these package would break other installed packages"
+}

src/bpmlib/general.go

@@ -0,0 +1,560 @@
+package bpmlib
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"maps"
+	"os"
+	"path"
+	"slices"
+	"strings"
+)
+
+// InstallPackages installs the specified packages into the given root directory by fetching them from databases or directly from local bpm archives
+func InstallPackages(rootDir string, forceInstallationReason InstallationReason, reinstallPackages bool, installRuntimeDependencies, forceInstallation, runChecks bool, verbose bool, packages ...string) (operation *BPMOperation, err error) {
+	// Setup operation struct
+	operation = &BPMOperation{
+		Actions:           make([]OperationAction, 0),
+		UnresolvedDepends: make([]string, 0),
+		ModifiedFiles:     make(map[string]string),
+		RunChecks:         runChecks,
+		RootDir:           rootDir,
+		compiledPackages:  make(map[string]string),
+	}
+
+	// Remove duplicates from packages
+	packages = removeDuplicates(packages)
+
+	// Resolve packages
+	pkgsNotFound := make([]string, 0)
+	for _, pkg := range packages {
+		if stat, err := os.Stat(pkg); err == nil && !stat.IsDir() {
+			bpmpkg, err := ReadPackage(pkg)
+			if err != nil {
+				return nil, fmt.Errorf("could not read package: %s", err)
+			}
+
+			if bpmpkg.PkgInfo.Type == "source" && bpmpkg.PkgInfo.IsSplitPackage() {
+				for _, splitPkg := range bpmpkg.PkgInfo.SplitPackages {
+					if !reinstallPackages && IsPackageInstalled(splitPkg.Name, rootDir) && GetPackageInfo(splitPkg.Name, rootDir).GetFullVersion() == splitPkg.GetFullVersion() {
+						continue
+					}
+
+					// Set package installation reason
+					installationReason := forceInstallationReason
+					if installationReason == InstallationReasonUnknown {
+						if IsPackageInstalled(splitPkg.Name, rootDir) {
+							installationReason = GetPackage(splitPkg.Name, rootDir).LocalInfo.GetInstallationReason()
+						} else {
+							installationReason = InstallationReasonManual
+						}
+					}
+
+					operation.AppendAction(&InstallPackageAction{
+						File:                  pkg,
+						InstallationReason:    installationReason,
+						BpmPackage:            bpmpkg,
+						SplitPackageToInstall: splitPkg.Name,
+					})
+				}
+				continue
+			}
+
+			if !reinstallPackages && IsPackageInstalled(bpmpkg.PkgInfo.Name, rootDir) && GetPackageInfo(bpmpkg.PkgInfo.Name, rootDir).GetFullVersion() == bpmpkg.PkgInfo.GetFullVersion() {
+				continue
+			}
+
+			// Set package installation reason
+			installationReason := forceInstallationReason
+			if installationReason == InstallationReasonUnknown {
+				if IsPackageInstalled(bpmpkg.PkgInfo.Name, rootDir) {
+					installationReason = GetPackage(bpmpkg.PkgInfo.Name, rootDir).LocalInfo.GetInstallationReason()
+				} else {
+					installationReason = InstallationReasonManual
+				}
+			}
+
+			operation.AppendAction(&InstallPackageAction{
+				File:               pkg,
+				InstallationReason: installationReason,
+				BpmPackage:         bpmpkg,
+			})
+		} else {
+			// Split package name and required version
+			pkgName, _, _ := SplitPkgNameAndVersion(pkg)
+
+			var entry *BPMDatabaseEntry
+
+			if e, _, err := GetDatabaseEntry(pkgName); err == nil {
+				entry = e
+			} else if providers := GetVirtualPackageInfo(pkgName, rootDir); len(providers) > 0 {
+				entry, _, err = GetDatabaseEntry(providers[0].Name)
+				if err != nil {
+					pkgsNotFound = append(pkgsNotFound, pkg)
+					continue
+				}
+			} else if providers := GetDatabaseVirtualPackageEntry(pkgName); len(providers) > 0 {
+				entry = providers[0]
+			} else {
+				pkgsNotFound = append(pkgsNotFound, pkg)
+				continue
+			}
+
+			if !EvaluateDependency(pkg, entry.Info.Version) {
+				pkgsNotFound = append(pkgsNotFound, pkg)
+				continue
+			}
+
+			if !reinstallPackages && IsPackageInstalled(entry.Info.Name, rootDir) && GetPackageInfo(entry.Info.Name, rootDir).GetFullVersion() == entry.Info.GetFullVersion() {
+				continue
+			}
+
+			// Set package installation reason
+			installationReason := forceInstallationReason
+			if installationReason == InstallationReasonUnknown {
+				if IsPackageInstalled(entry.Info.Name, rootDir) {
+					installationReason = GetPackage(entry.Info.Name, rootDir).LocalInfo.GetInstallationReason()
+				} else {
+					installationReason = InstallationReasonManual
+				}
+			}
+
+			operation.AppendAction(&FetchPackageAction{
+				InstallationReason: installationReason,
+				DatabaseEntry:      entry,
+			})
+		}
+	}
+
+	// Return error if not all packages are found
+	if len(pkgsNotFound) != 0 {
+		return nil, PackageNotFoundErr{pkgsNotFound}
+	}
+
+	// Resolve dependencies
+	operation.ResolveDependencies(installRuntimeDependencies)
+	if len(operation.UnresolvedDepends) != 0 {
+		if !forceInstallation {
+			return nil, DependencyNotFoundErr{operation.UnresolvedDepends}
+		} else if verbose {
+			log.Printf("Warning: %s", DependencyNotFoundErr{operation.UnresolvedDepends})
+		}
+	}
+
+	// Replace obsolete packages
+	operation.ReplaceObsoletePackages()
+
+	// Check for conflicts
+	conflicts := operation.CheckForConflicts()
+	if len(conflicts) > 0 {
+		err = fmt.Errorf("conflicts detected")
+		for pkg, conflict := range conflicts {
+			err = errors.Join(err, PackageConflictErr{pkg, conflict})
+		}
+		if !forceInstallation {
+			return nil, err
+		} else {
+			log.Printf("Warning: %s", err)
+		}
+	}
+
+	// Check whether compiling source packages on different root directory
+	if rootDir != "/" {
+		sourcePackages := make([]string, 0)
+		for _, action := range operation.Actions {
+			switch action := action.(type) {
+			case *InstallPackageAction:
+				if action.BpmPackage.PkgInfo.Type == "source" {
+					sourcePackages = append(sourcePackages, action.BpmPackage.PkgInfo.Name)
+				}
+			case *FetchPackageAction:
+				if action.DatabaseEntry.Info.Type == "source" {
+					sourcePackages = append(sourcePackages, action.DatabaseEntry.Info.Name)
+				}
+			}
+		}
+
+		// Return error if source packages are present in the operation
+		if len(sourcePackages) != 0 {
+			return nil, fmt.Errorf("cannot compile source packages in different root directory: %s", strings.Join(sourcePackages, ", "))
+		}
+	}
+
+	return operation, nil
+}
+
+// RemovePackages removes the specified packages from the given root directory
+func RemovePackages(rootDir string, force, cleanupDependencies bool, packages ...string) (operation *BPMOperation, err error) {
+	operation = &BPMOperation{
+		Actions:           make([]OperationAction, 0),
+		UnresolvedDepends: make([]string, 0),
+		ModifiedFiles:     make(map[string]string),
+		RootDir:           rootDir,
+		compiledPackages:  make(map[string]string),
+	}
+
+	// Remove duplicates from packages
+	packages = removeDuplicates(packages)
+
+	// Search for packages
+	for _, pkg := range packages {
+		bpmpkg := GetPackage(pkg, rootDir)
+		if providers := GetVirtualPackageInfo(pkg, rootDir); len(providers) > 0 {
+			bpmpkg = GetPackage(providers[0].Name, rootDir)
+		}
+		if bpmpkg == nil {
+			continue
+		}
+		operation.AppendAction(&RemovePackageAction{BpmPackage: bpmpkg})
+	}
+
+	// Do package cleanup
+	if cleanupDependencies {
+		err := operation.Cleanup(MainBPMConfig.CleanupMakeDependencies)
+		if err != nil {
+			return nil, fmt.Errorf("could not perform cleanup for operation: %s", err)
+		}
+	}
+
+	// Return error if other packages depend on removed ones
+	if !force {
+		// Get packages and their dependants
+		packageDepndants := make(map[string][]string, 0)
+		for _, action := range operation.Actions {
+			// Skip package if ignored in config
+			if slices.Contains(MainBPMConfig.IgnorePackages, action.(*RemovePackageAction).BpmPackage.PkgInfo.Name) {
+				continue
+			}
+
+			dependants := action.(*RemovePackageAction).BpmPackage.PkgInfo.GetPackageDependants(rootDir, true)
+			packageDepndants[action.(*RemovePackageAction).BpmPackage.PkgInfo.Name] = dependants
+		}
+
+		// Remove dependant packages from map if they are to be removed by this operation
+		for pkg, required := range packageDepndants {
+			required = slices.DeleteFunc(required, func(pkgName string) bool {
+				_, ok := packageDepndants[pkgName]
+				return ok
+			})
+			packageDepndants[pkg] = required
+		}
+
+		// Remove dependant packages if ignored
+		for pkg, required := range packageDepndants {
+			required = slices.DeleteFunc(required, func(pkgName string) bool {
+				return slices.Contains(MainBPMConfig.IgnorePackages, pkgName)
+			})
+			packageDepndants[pkg] = required
+		}
+
+		// Remove empty keys from map
+		maps.DeleteFunc(packageDepndants, func(pkg string, required []string) bool {
+			return len(required) == 0
+		})
+
+		// Return error
+		if len(packageDepndants) != 0 {
+			return nil, PackageRemovalDependencyErr{RequiredPackages: packageDepndants}
+		}
+	}
+
+	return operation, nil
+}
+
+// CleanupPackages finds packages installed as dependencies which are no longer required by the rest of the system in the given root directory
+func CleanupPackages(cleanupMakeDepends bool, rootDir string) (operation *BPMOperation, err error) {
+	operation = &BPMOperation{
+		Actions:           make([]OperationAction, 0),
+		UnresolvedDepends: make([]string, 0),
+		ModifiedFiles:     make(map[string]string),
+		RootDir:           rootDir,
+		compiledPackages:  make(map[string]string),
+	}
+
+	// Do package cleanup
+	err = operation.Cleanup(cleanupMakeDepends)
+	if err != nil {
+		return nil, fmt.Errorf("could not perform cleanup for operation: %s", err)
+	}
+
+	return operation, nil
+}
+
+func CleanupCache(rootDir string, cleanupCompilationFiles, cleanupCompiledPackages, cleanupFetchedPackages, verbose bool) error {
+	if cleanupCompilationFiles {
+		globalCompilationCacheDir := path.Join(rootDir, "var/cache/bpm/compilation")
+
+		// Ensure path exists and is a directory
+		if stat, err := os.Stat(globalCompilationCacheDir); err == nil && stat.IsDir() {
+			// Delete directory
+			if verbose {
+				log.Printf("Removing directory (%s)\n", globalCompilationCacheDir)
+			}
+			err = os.RemoveAll(globalCompilationCacheDir)
+			if err != nil {
+				return err
+			}
+		}
+
+		// Get home directories of users in root directory
+		homeDirs, err := os.ReadDir(path.Join(rootDir, "home"))
+		if err != nil {
+			return err
+		}
+
+		// Loop through all home directories
+		for _, homeDir := range homeDirs {
+			// Skip if not a directory
+			if !homeDir.IsDir() {
+				continue
+			}
+
+			localCompilationDir := path.Join(rootDir, "home", homeDir.Name(), ".cache/bpm/compilation")
+
+			// Ensure path exists and is a directory
+			if stat, err := os.Stat(localCompilationDir); err != nil || !stat.IsDir() {
+				continue
+			}
+
+			// Delete directory
+			if verbose {
+				log.Printf("Removing directory (%s)\n", localCompilationDir)
+			}
+			err = os.RemoveAll(localCompilationDir)
+			if err != nil {
+				return err
+			}
+		}
+	}
+
+	if cleanupCompiledPackages {
+		dirToRemove := path.Join(rootDir, "var/cache/bpm/compiled")
+
+		// Ensure path exists and is a directory
+		if stat, err := os.Stat(dirToRemove); err == nil && stat.IsDir() {
+			// Delete directory
+			if verbose {
+				log.Printf("Removing directory (%s)\n", dirToRemove)
+			}
+			err = os.RemoveAll(dirToRemove)
+			if err != nil {
+				return err
+			}
+		}
+	}
+
+	if cleanupFetchedPackages {
+		dirToRemove := path.Join(rootDir, "var/cache/bpm/fetched")
+
+		// Ensure path exists and is a directory
+		if stat, err := os.Stat(dirToRemove); err == nil && stat.IsDir() {
+			// Delete directory
+			if verbose {
+				log.Printf("Removing directory (%s)\n", dirToRemove)
+			}
+			err = os.RemoveAll(dirToRemove)
+			if err != nil {
+				return err
+			}
+		}
+	}
+
+	return nil
+}
+
+// UpdatePackages fetches the newest versions of all installed packages from
+func UpdatePackages(rootDir string, syncDatabase, allowDowngrades, forceInstallation, runChecks, verbose bool) (operation *BPMOperation, err error) {
+	// Sync databases
+	if syncDatabase {
+		err := SyncDatabase(verbose)
+		if err != nil {
+			return nil, fmt.Errorf("could not sync local database: %s", err)
+		}
+		if verbose {
+			fmt.Println("All package databases synced successfully!")
+		}
+
+		// Reload config and local databases
+		err = ReadConfig()
+		if err != nil {
+			return nil, fmt.Errorf("could not read BPM config: %s", err)
+		}
+		err = ReadLocalDatabaseFiles()
+		if err != nil {
+			return nil, fmt.Errorf("could not read local databases: %s", err)
+		}
+	}
+
+	// Get installed packages and check for updates
+	pkgs, err := GetInstalledPackages(rootDir)
+	if err != nil {
+		return nil, fmt.Errorf("could not get installed packages: %s", err)
+	}
+
+	operation = &BPMOperation{
+		Actions:           make([]OperationAction, 0),
+		UnresolvedDepends: make([]string, 0),
+		ModifiedFiles:     make(map[string]string),
+		RunChecks:         runChecks,
+		RootDir:           rootDir,
+		compiledPackages:  make(map[string]string),
+	}
+
+	// Search for packages
+	pkgsNotFound := make([]string, 0)
+	for _, pkg := range pkgs {
+		if slices.Contains(MainBPMConfig.IgnorePackages, pkg) {
+			continue
+		}
+		var entry *BPMDatabaseEntry
+		// Check if installed package can be replaced and install that instead
+		if e := FindReplacement(pkg); e != nil {
+			entry = e
+		} else if entry, _, err = GetDatabaseEntry(pkg); err != nil {
+			continue
+		}
+
+		installedInfo := GetPackageInfo(pkg, rootDir)
+		if installedInfo == nil {
+			return nil, fmt.Errorf("could not get package info for package (%s)", pkg)
+		} else {
+			comparison := CompareVersions(entry.Info.GetFullVersion(), installedInfo.GetFullVersion())
+			if (!allowDowngrades && comparison > 0) || (allowDowngrades && comparison != 0) {
+				operation.AppendAction(&FetchPackageAction{
+					InstallationReason: GetPackage(pkg, rootDir).LocalInfo.GetInstallationReason(),
+					DatabaseEntry:      entry,
+				})
+			}
+
+			// Check for missing dependencies
+			for _, depend := range entry.Info.Depends {
+				// Split package name and required version
+				dependName, _, _ := SplitPkgNameAndVersion(depend)
+
+				if IsPackageInstalled(dependName, rootDir) && EvaluateDependency(depend, GetPackageInfo(dependName, rootDir).Version) {
+					continue
+				}
+				if len(GetVirtualPackageInfo(dependName, rootDir)) > 0 {
+					continue
+				}
+
+				// Find database entry for missing dependency
+				dependEntry, _, err := GetDatabaseEntry(dependName)
+				if err != nil {
+					providers := GetDatabaseVirtualPackageEntry(dependName)
+					if len(providers) == 0 {
+						pkgsNotFound = append(pkgsNotFound, depend)
+						continue
+					}
+
+					dependEntry = providers[0]
+				}
+
+				// Skip dependency if action already exists
+				if operation.ActionsContainPackage(dependEntry.Info.Name) {
+					continue
+				}
+
+				// Skip dependency if ignored in config
+				if slices.Contains(MainBPMConfig.IgnorePackages, dependEntry.Info.Name) {
+					continue
+				}
+
+				// Ensure entry has required version
+				if !EvaluateDependency(depend, dependEntry.Info.Version) {
+					pkgsNotFound = append(pkgsNotFound, depend)
+					continue
+				}
+
+				// Fetch dependency
+				operation.AppendAction(&FetchPackageAction{
+					InstallationReason: InstallationReasonDependency,
+					DatabaseEntry:      dependEntry,
+				})
+			}
+
+			// Check for missing runtime dependencies
+			for _, depend := range entry.Info.RuntimeDepends {
+				// Split package name and required version
+				dependName, _, _ := SplitPkgNameAndVersion(depend)
+
+				if IsPackageInstalled(dependName, rootDir) && EvaluateDependency(depend, GetPackageInfo(dependName, rootDir).Version) {
+					continue
+				}
+				if len(GetVirtualPackageInfo(dependName, rootDir)) > 0 {
+					continue
+				}
+
+				// Find database entry for missing dependency
+				dependEntry, _, err := GetDatabaseEntry(dependName)
+				if err != nil {
+					providers := GetDatabaseVirtualPackageEntry(dependName)
+					if len(providers) == 0 {
+						pkgsNotFound = append(pkgsNotFound, depend)
+						continue
+					}
+
+					dependEntry = providers[0]
+				}
+
+				// Skip dependency if ignored in config
+				if slices.Contains(MainBPMConfig.IgnorePackages, dependEntry.Info.Name) {
+					continue
+				}
+
+				// Ensure entry has required version
+				if !EvaluateDependency(depend, dependEntry.Info.Version) {
+					pkgsNotFound = append(pkgsNotFound, depend)
+					continue
+				}
+
+				// Fetch dependency
+				operation.AppendAction(&FetchPackageAction{
+					InstallationReason: InstallationReasonDependency,
+					DatabaseEntry:      dependEntry,
+				})
+			}
+		}
+	}
+
+	// Return error if not all packages are found
+	if len(pkgsNotFound) != 0 {
+		return nil, PackageNotFoundErr{pkgsNotFound}
+	}
+
+	// Replace obsolete packages
+	operation.ReplaceObsoletePackages()
+
+	// Check for conflicts
+	conflicts := operation.CheckForConflicts()
+	if len(conflicts) > 0 {
+		err = fmt.Errorf("conflicts detected")
+		for pkg, conflict := range conflicts {
+			err = errors.Join(err, PackageConflictErr{pkg, conflict})
+		}
+		if !forceInstallation {
+			return nil, err
+		} else {
+			log.Printf("Warning: %s", err)
+		}
+	}
+
+	return operation, nil
+}
+
+// SyncDatabase syncs all databases declared in /etc/bpm.conf
+func SyncDatabase(verbose bool) (err error) {
+	for _, db := range MainBPMConfig.Databases {
+		if verbose {
+			fmt.Printf("Fetching package database file for database (%s)...\n", db.Name)
+		}
+
+		err := db.SyncLocalDatabaseFile()
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}

src/bpmlib/go.mod

@@ -0,0 +1,17 @@
+module github.com/EnumeratedDev/bpm/src/bpmlib
+
+go 1.24.0
+
+require (
+	github.com/drone/envsubst v1.0.3
+	github.com/knqyf263/go-rpm-version v0.0.0-20240918084003-2afd7dc6a38f
+	github.com/schollz/progressbar/v3 v3.18.0
+	gopkg.in/yaml.v3 v3.0.1
+)
+
+require (
+	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	golang.org/x/sys v0.37.0 // indirect
+	golang.org/x/term v0.36.0 // indirect
+)

src/bpmlib/go.sum

@@ -0,0 +1,30 @@
+github.com/chengxilo/virtualterm v1.0.4 h1:Z6IpERbRVlfB8WkOmtbHiDbBANU7cimRIof7mk9/PwM=
+github.com/chengxilo/virtualterm v1.0.4/go.mod h1:DyxxBZz/x1iqJjFxTFcr6/x+jSpqN0iwWCOK1q10rlY=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/drone/envsubst v1.0.3 h1:PCIBwNDYjs50AsLZPYdfhSATKaRg/FJmDc2D6+C2x8g=
+github.com/drone/envsubst v1.0.3/go.mod h1:N2jZmlMufstn1KEqvbHjw40h1KyTmnVzHcSc9bFiJ2g=
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+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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src/bpmlib/gpg.go

@@ -0,0 +1,216 @@
+package bpmlib
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"path"
+	"strings"
+)
+
+func InitializeKeyring(rootDir string) error {
+	gpgHomedir := path.Join(rootDir, "/var/lib/bpm/gpg")
+
+	// Create GPG directory
+	err := os.Mkdir(gpgHomedir, 0700)
+	if err != nil && !os.IsExist(err) {
+		return err
+	}
+
+	// Get number of secret keys
+	cmd := exec.Command("gpg", "--homedir="+gpgHomedir, "--list-secret-keys", "--with-colons")
+	output, err := cmd.Output()
+	if err != nil {
+		return err
+	}
+	secretKeysLineCount := len(strings.Split(strings.TrimSpace(string(output)), "\n"))
+
+	// Create signing key
+	if secretKeysLineCount <= 1 {
+		cmd := exec.Command("gpg", "--homedir="+gpgHomedir, "--batch", "--gen-key")
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		cmd.Stdin = strings.NewReader(`%echo Creating signing key...
+Key-Type: RSA
+Key-Length: 4096
+Key-Usage: sign
+Name-Real: BPM signing key
+Name-Email: bpm@localhost
+Expire-Date: 0
+%no-protection
+%commit
+%echo Done`)
+
+		err = cmd.Run()
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func IsKeyringInitialized(rootDir string) bool {
+	gpgHomedir := path.Join(rootDir, "/var/lib/bpm/gpg")
+
+	// Check if gpg directory exists
+	if stat, err := os.Stat(gpgHomedir); err != nil || !stat.IsDir() {
+		return false
+	}
+
+	// Get number of secret keys
+	cmd := exec.Command("gpg", "--homedir="+gpgHomedir, "--list-secret-keys", "--with-colons")
+	output, err := cmd.Output()
+	if err != nil {
+		return false
+	}
+	secretKeysLineCount := len(strings.Split(strings.TrimSpace(string(output)), "\n"))
+
+	// Return false if no signing key has been created
+	if secretKeysLineCount <= 1 {
+		return false
+	}
+
+	return true
+}
+
+func PopulateKeyring(rootDir string) error {
+	gpgHomedir := path.Join(rootDir, "/var/lib/bpm/gpg")
+	keyringsDir := path.Join(rootDir, "/var/lib/bpm/keyrings")
+
+	dirEntries, err := os.ReadDir(keyringsDir)
+	if err != nil && !os.IsNotExist(err) {
+		return err
+	}
+
+	// Remove removed keys
+	for _, entry := range dirEntries {
+		if entry.IsDir() {
+			continue
+		}
+		if !strings.HasSuffix(entry.Name(), ".revoked") {
+			continue
+		}
+
+		data, err := os.ReadFile(path.Join(keyringsDir, entry.Name()))
+		if err != nil {
+			return err
+		}
+
+		// Loop over all key IDs
+		for entry := range strings.SplitSeq(strings.TrimSpace(string(data)), "\n") {
+			// Ensure key ID exists
+			err := exec.Command("gpg", "--homedir="+gpgHomedir, "--list-keys", entry).Run()
+			if err != nil {
+				continue
+			}
+
+			cmd := exec.Command("gpg", "--homedir="+gpgHomedir, "--batch", "--yes", "--delete-secret-and-public-keys", entry)
+
+			err = cmd.Run()
+			if err != nil {
+				return err
+			}
+		}
+	}
+
+	// Import all keyrings
+	for _, entry := range dirEntries {
+		if entry.IsDir() {
+			continue
+		}
+		if !strings.HasSuffix(entry.Name(), ".pgp") && !strings.HasSuffix(entry.Name(), ".asc") {
+			continue
+		}
+
+		cmd := exec.Command("gpg", "--homedir="+gpgHomedir, "--import", path.Join(keyringsDir, entry.Name()))
+
+		err := cmd.Run()
+		if err != nil {
+			return err
+		}
+	}
+
+	// Trust keys
+	for _, entry := range dirEntries {
+		if entry.IsDir() {
+			continue
+		}
+		if !strings.HasSuffix(entry.Name(), ".trustdb") {
+			continue
+		}
+
+		data, err := os.ReadFile(path.Join(keyringsDir, entry.Name()))
+		if err != nil {
+			return err
+		}
+
+		// Loop over all key IDs
+		for entry := range strings.SplitSeq(strings.TrimSpace(string(data)), "\n") {
+			keyID := strings.Split(entry, ":")[0]
+
+			// Ensure key ID exists
+			err := exec.Command("gpg", "--homedir="+gpgHomedir, "--list-keys", keyID).Run()
+			if err != nil {
+				continue
+			}
+
+			// Sign key
+			cmd := exec.Command("gpg", "--homedir="+gpgHomedir, "--command-fd=0", "--batch", "--lsign-key", keyID)
+			cmd.Stdin = strings.NewReader("y\ny\n")
+
+			err = cmd.Run()
+			if err != nil {
+				return err
+			}
+		}
+
+		// Import owner trust database
+		cmd := exec.Command("gpg", "--homedir="+gpgHomedir, "--import-ownertrust", path.Join(keyringsDir, entry.Name()))
+
+		err = cmd.Run()
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func VerifySignature(filename, signature string, requireTrusted bool, rootDir string) error {
+	gpgHomedir := path.Join(rootDir, "/var/lib/bpm/gpg")
+
+	if _, err := os.Stat(gpgHomedir); err != nil {
+		return err
+	}
+
+	cmd := exec.Command("gpg", "--homedir="+gpgHomedir, "--status-fd=3", "--verify", signature, filename)
+	pipeReader, pipeWriter, err := os.Pipe()
+	if err != nil {
+		return err
+	}
+	defer pipeReader.Close()
+	defer pipeWriter.Close()
+	cmd.ExtraFiles = append(cmd.ExtraFiles, pipeWriter)
+
+	err = cmd.Run()
+	if err != nil {
+		return err
+	}
+	pipeWriter.Close()
+
+	if requireTrusted {
+		data, err := io.ReadAll(pipeReader)
+		if err != nil {
+			return err
+		}
+
+		dataStr := string(data)
+		if !strings.Contains(dataStr, "[GNUPG:] TRUST_FULLY") && !strings.Contains(dataStr, "[GNUPG:] TRUST_ULTIMATE") {
+			return fmt.Errorf("signature verified but not trusted")
+		}
+	}
+
+	return err
+}

src/bpmlib/hooks.go

@@ -0,0 +1,137 @@
+package bpmlib
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"slices"
+	"strings"
+	"syscall"
+
+	"gopkg.in/yaml.v3"
+)
+
+type BPMHook struct {
+	SourcePath          string
+	SourceContent       string
+	TriggerActions      []string `yaml:"trigger_actions"`
+	TriggerPreOperation bool     `yaml:"trigger_pre_operation"`
+	Targets             []string `yaml:"targets"`
+	Run                 string   `yaml:"run"`
+	PassTargets         bool     `yaml:"pass_targets"`
+}
+
+// createHook returns a BPMHook instance based on the content of the given string
+func createHook(sourcePath string) (*BPMHook, error) {
+	// Read hook from source path
+	bytes, err := os.ReadFile(sourcePath)
+	if err != nil {
+		return nil, err
+	}
+
+	// Create base hook structure
+	hook := &BPMHook{
+		SourcePath:     sourcePath,
+		SourceContent:  string(bytes),
+		TriggerActions: nil,
+		Targets:        nil,
+		Run:            "",
+	}
+
+	// Unmarshal yaml string
+	err = yaml.Unmarshal(bytes, hook)
+	if err != nil {
+		return nil, err
+	}
+
+	// Ensure hook is valid
+	if err := hook.IsValid(); err != nil {
+		return nil, err
+	}
+
+	return hook, nil
+}
+
+// IsValid ensures hook is valid
+func (hook *BPMHook) IsValid() error {
+	ValidOperations := []string{"install", "upgrade", "remove"}
+
+	// Return error if any trigger operation is not valid or none are given
+	if len(hook.TriggerActions) == 0 {
+		return errors.New("no trigger operations specified")
+	}
+	for _, operation := range hook.TriggerActions {
+		if !slices.Contains(ValidOperations, operation) {
+			return errors.New("trigger operation '" + operation + "' is not valid")
+		}
+	}
+
+	if len(hook.Run) == 0 {
+		return errors.New("command to run is empty")
+	}
+
+	// Return nil as hook is valid
+	return nil
+}
+
+// Execute hook if all conditions are met
+func (hook *BPMHook) Execute(modifiedFiles map[string]string, preOperation bool, verbose bool, rootDir string) error {
+	// Check if any targets are met
+	targetsMet := make([]string, 0)
+	for _, target := range hook.Targets {
+		for modifiedFile, action := range modifiedFiles {
+			// Check if this hook is triggered by this file's action
+			if !slices.Contains(hook.TriggerActions, action) {
+				continue
+			}
+
+			// Check if file has already been checked
+			if slices.Contains(targetsMet, modifiedFile) {
+				continue
+			}
+
+			if matched, _ := filepath.Match(target, modifiedFile); !matched {
+				continue
+			}
+
+			targetsMet = append(targetsMet, modifiedFile)
+		}
+	}
+
+	if len(targetsMet) == 0 {
+		return nil
+	}
+
+	// Execute the command
+	splitCommand := strings.Split(hook.Run, " ")
+	cmd := exec.Command(splitCommand[0], splitCommand[1:]...)
+	// Setup subprocess environment
+	cmd.Dir = "/"
+	// Pass targets
+	if hook.PassTargets {
+		buffer := bytes.Buffer{}
+		buffer.WriteString(strings.Join(targetsMet, "\n") + "\n")
+
+		cmd.Stdin = &buffer
+	}
+	// Run hook in chroot if using the -R flag
+	if rootDir != "/" {
+		cmd.SysProcAttr = &syscall.SysProcAttr{Chroot: rootDir}
+	}
+
+	if !verbose {
+		fmt.Printf("Running hook (%s)\n", filepath.Base(hook.SourcePath))
+	} else {
+		fmt.Printf("Running hook (%s) with run command: %s\n", filepath.Base(hook.SourcePath), strings.Join(splitCommand, " "))
+	}
+
+	err := cmd.Run()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

src/bpmlib/installed_packages.go

@@ -0,0 +1,400 @@
+package bpmlib
+
+import (
+	"fmt"
+	"os"
+	"path"
+	"path/filepath"
+	"slices"
+	"strconv"
+	"strings"
+
+	"gopkg.in/yaml.v3"
+)
+
+var persistentDataVersion int = 1
+
+var localPackageInformation map[string]map[string]*PackageInfo = make(map[string]map[string]*PackageInfo)
+var installedVirtualPackages map[string]map[string][]*PackageInfo = make(map[string]map[string][]*PackageInfo)
+
+func InitializeLocalPackageInformation(rootDir string) (err error) {
+	// Return if information is already initialized
+	if _, ok := localPackageInformation[rootDir]; ok {
+		return nil
+	}
+
+	tempPackageInformation := make(map[string]*PackageInfo)
+	tempInstalledVirtualPackages := make(map[string][]*PackageInfo)
+
+	// Get paths
+	persistentDataDir := path.Join(rootDir, "var/lib/bpm")
+	installedDir := path.Join(persistentDataDir, "installed")
+
+	// Ensure persistent data directory is up-to-date
+	if _, err := os.Stat(persistentDataDir); err == nil {
+		data, err := os.ReadFile(path.Join(persistentDataDir, ".version"))
+		if err != nil {
+			return fmt.Errorf("persistent data is not up-to-date! Please run 'bpm upgrade-persistent-data' first")
+		}
+		currentPersistentDataVersion, err := strconv.Atoi(strings.TrimSpace(string(data)))
+		if err != nil {
+			return fmt.Errorf("persistent data is not up-to-date! Please run 'bpm upgrade-persistent-data' first")
+		}
+		if currentPersistentDataVersion != persistentDataVersion {
+			return fmt.Errorf("persistent data is not up-to-date! Please run 'bpm upgrade-persistent-data' first")
+		}
+	}
+
+	// Get directory content
+	items, err := os.ReadDir(installedDir)
+	if os.IsNotExist(err) {
+		localPackageInformation[rootDir] = make(map[string]*PackageInfo)
+		return nil
+	}
+	if err != nil {
+		return err
+	}
+
+	// Loop through each subdirectory
+	for _, item := range items {
+		// Skip if not a directory
+		if !item.IsDir() {
+			continue
+		}
+
+		// Read package info
+		infoData, err := os.ReadFile(path.Join(installedDir, item.Name(), "info"))
+		if err != nil {
+			return err
+		}
+		info, err := ReadPackageInfo(string(infoData))
+		if err != nil {
+			return err
+		}
+
+		// Add package to slice
+		tempPackageInformation[info.Name] = info
+
+		// Add virtual packages
+		for _, vpkg := range info.Provides {
+			tempInstalledVirtualPackages[vpkg] = append(tempInstalledVirtualPackages[vpkg], info)
+		}
+	}
+
+	localPackageInformation[rootDir] = tempPackageInformation
+	installedVirtualPackages[rootDir] = tempInstalledVirtualPackages
+	return nil
+}
+
+func GetInstalledPackages(rootDir string) (ret []string, err error) {
+	// Initialize local package information
+	err = InitializeLocalPackageInformation(rootDir)
+	if err != nil {
+		return nil, err
+	}
+
+	// Loop through each package and add it to slice
+	for _, pkgInfo := range localPackageInformation[rootDir] {
+		ret = append(ret, pkgInfo.Name)
+	}
+
+	// Sort packages
+	slices.Sort(ret)
+
+	return ret, nil
+}
+
+func GetPathOwners(path, rootDir string) (ret []string, err error) {
+	// Get absolte path to path
+	path, err = filepath.Abs(path)
+	if err != nil {
+		return
+	}
+
+	path, err = filepath.Rel(rootDir, path)
+	if err != nil {
+		return
+	}
+
+	// Trim leading and trailing slashes
+	path = strings.TrimLeft(path, "/")
+	path = strings.TrimRight(path, "/")
+
+	// Get installed packages
+	pkgs, err := GetInstalledPackages(rootDir)
+	if err != nil {
+		return
+	}
+
+	// Add packages that own path to list
+	for _, pkg := range pkgs {
+		pkgFiles := getPackageFiles(pkg, rootDir)
+		if slices.ContainsFunc(pkgFiles, func(entry *PackageFileEntry) bool {
+			return entry.Path == path
+		}) {
+			ret = append(ret, pkg)
+		}
+	}
+
+	return ret, nil
+}
+
+func IsPackageInstalled(pkg, rootDir string) bool {
+	// Initialize local package information
+	err := InitializeLocalPackageInformation(rootDir)
+	if err != nil {
+		return false
+	}
+
+	if _, ok := localPackageInformation[rootDir][pkg]; !ok {
+		return false
+	}
+	return true
+}
+
+func GetVirtualPackageInfo(vpkg, rootDir string) []*PackageInfo {
+	err := InitializeLocalPackageInformation(rootDir)
+	if err != nil {
+		return nil
+	}
+
+	providers := installedVirtualPackages[rootDir][vpkg]
+	slices.SortFunc(providers, func(a, b *PackageInfo) int {
+		return strings.Compare(a.Name, b.Name)
+	})
+
+	return providers
+}
+
+func GetPackageInfo(pkg string, rootDir string) *PackageInfo {
+	err := InitializeLocalPackageInformation(rootDir)
+	if err != nil {
+		return nil
+	}
+
+	return localPackageInformation[rootDir][pkg]
+}
+
+func GetPackage(pkg, rootDir string) *BPMPackage {
+	pkgInfo := GetPackageInfo(pkg, rootDir)
+	if pkgInfo == nil {
+		return nil
+	}
+
+	files := getPackageFiles(pkgInfo.Name, rootDir)
+	localInfo := getPackageLocalInfo(pkgInfo.Name, rootDir)
+
+	return &BPMPackage{
+		PkgInfo:   pkgInfo,
+		PkgFiles:  files,
+		LocalInfo: localInfo,
+	}
+}
+
+func GetAllPackageFiles(rootDir string, excludePackages ...string) (map[string][]*BPMPackage, error) {
+	ret := make(map[string][]*BPMPackage)
+
+	pkgNames, err := GetInstalledPackages(rootDir)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, pkgName := range pkgNames {
+		if slices.Contains(excludePackages, pkgName) {
+			continue
+		}
+		bpmpkg := GetPackage(pkgName, rootDir)
+		if bpmpkg == nil {
+			return nil, fmt.Errorf("could not get BPM package (%s)", pkgName)
+		}
+		for _, entry := range bpmpkg.PkgFiles {
+			ret[entry.Path] = append(ret[entry.Path], bpmpkg)
+
+		}
+	}
+
+	return ret, nil
+}
+
+func getPackageFiles(pkg, rootDir string) []*PackageFileEntry {
+	var pkgFiles []*PackageFileEntry
+	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
+	pkgDir := path.Join(installedDir, pkg)
+	files := path.Join(pkgDir, "files")
+	if _, err := os.Stat(installedDir); os.IsNotExist(err) {
+		return nil
+	}
+	if _, err := os.Stat(pkgDir); os.IsNotExist(err) {
+		return nil
+	}
+	bs, err := os.ReadFile(files)
+	if err != nil {
+		return nil
+	}
+
+	for _, line := range strings.Split(string(bs), "\n") {
+		if strings.TrimSpace(line) == "" {
+			continue
+		}
+		stringEntry := strings.Split(strings.TrimSpace(line), " ")
+		if len(stringEntry) < 5 {
+			pkgFiles = append(pkgFiles, &PackageFileEntry{
+				Path:        strings.TrimSuffix(line, "/"),
+				OctalPerms:  0,
+				UserID:      0,
+				GroupID:     0,
+				SizeInBytes: 0,
+			})
+			continue
+		}
+		uid, err := strconv.ParseInt(stringEntry[len(stringEntry)-4], 0, 32)
+		if err != nil {
+			return nil
+		}
+		octalPerms, err := strconv.ParseInt(stringEntry[len(stringEntry)-3], 0, 32)
+		if err != nil {
+			return nil
+		}
+		gid, err := strconv.ParseInt(stringEntry[len(stringEntry)-2], 0, 32)
+		if err != nil {
+			return nil
+		}
+		size, err := strconv.ParseInt(stringEntry[len(stringEntry)-1], 0, 64)
+		if err != nil {
+			return nil
+		}
+		pkgFiles = append(pkgFiles, &PackageFileEntry{
+			Path:        strings.TrimSuffix(strings.Join(stringEntry[:len(stringEntry)-4], " "), "/"),
+			OctalPerms:  uint32(octalPerms),
+			UserID:      int(uid),
+			GroupID:     int(gid),
+			SizeInBytes: size,
+		})
+	}
+
+	return pkgFiles
+}
+
+func getPackageLocalInfo(pkg, rootDir string) PackageLocalInfo {
+	localInfo := PackageLocalInfo{}
+
+	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
+	pkgDir := path.Join(installedDir, pkg)
+	localInfoFile := path.Join(path.Join(pkgDir, "local"))
+
+	if _, err := os.Stat(localInfoFile); os.IsNotExist(err) {
+		return localInfo
+	}
+
+	file, err := os.Open(localInfoFile)
+	if err != nil {
+		return localInfo
+	}
+	defer file.Close()
+
+	err = yaml.NewDecoder(file).Decode(&localInfo)
+	if err != nil {
+		return localInfo
+	}
+
+	return localInfo
+}
+
+func SetPackageLocalInfo(pkg string, localInfo PackageLocalInfo, rootDir string) error {
+	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
+	pkgDir := path.Join(installedDir, pkg)
+
+	localFile, err := os.OpenFile(path.Join(pkgDir, "local"), os.O_WRONLY|os.O_CREATE, 0644)
+	if err != nil {
+		return err
+	}
+	defer localFile.Close()
+
+	err = yaml.NewEncoder(localFile).Encode(localInfo)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func UpgradePersistentData(rootDir string) error {
+	persistentDataDir := path.Join(rootDir, "var/lib/bpm")
+
+	// Create persistent data directory
+	os.MkdirAll(persistentDataDir, 0755)
+
+	// Upgrade installed package directories
+	dirEntries, err := os.ReadDir(path.Join(persistentDataDir, "installed"))
+	if err != nil && !os.IsNotExist(err) {
+		return err
+	} else if err == nil {
+		for _, entry := range dirEntries {
+			pkgDir := path.Join(persistentDataDir, "installed", entry.Name())
+
+			// Generate default local package information file
+			if _, err := os.Stat(path.Join(pkgDir, "local")); err != nil && !os.IsNotExist(err) {
+				return err
+			} else if os.IsNotExist(err) {
+				fmt.Printf("Generating local package information for package (%s)\n", entry.Name())
+
+				out, err := yaml.Marshal(PackageLocalInfo{
+					InstallationReason: "unknown",
+					InstalledOn:        0,
+					LastUpdatedOn:      0,
+				})
+				if err != nil {
+					return err
+				}
+
+				err = os.WriteFile(path.Join(pkgDir, "local"), out, 0644)
+				if err != nil {
+					return err
+				}
+			}
+
+			// Move installation reason to local package information file
+			if installationReason, err := os.ReadFile(path.Join(pkgDir, "installation_reason")); err != nil && !os.IsNotExist(err) {
+				return err
+			} else if err == nil {
+				fmt.Printf("Moving installation reason to local package information for package (%s)\n", entry.Name())
+
+				data, err := os.ReadFile(path.Join(pkgDir, "local"))
+				if err != nil {
+					return err
+				}
+
+				localInfo := &PackageLocalInfo{}
+				err = yaml.Unmarshal(data, localInfo)
+				if err != nil {
+					return err
+				}
+
+				localInfo.InstallationReason = strings.TrimSpace(string(installationReason))
+
+				out, err := yaml.Marshal(localInfo)
+				if err != nil {
+					return err
+				}
+
+				err = os.WriteFile(path.Join(pkgDir, "local"), out, 0644)
+				if err != nil {
+					return err
+				}
+
+				err = os.Remove(path.Join(pkgDir, "installation_reason"))
+				if err != nil {
+					return err
+				}
+			}
+		}
+	}
+
+	// Set persistent data version number
+	err = os.WriteFile(path.Join(persistentDataDir, ".version"), []byte(strconv.Itoa(persistentDataVersion)), 0644)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

src/bpmlib/net.go

@@ -0,0 +1,58 @@
+package bpmlib
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path"
+	"strings"
+)
+
+func downloadFile(barText, u, filepath string, perm os.FileMode) error {
+	if strings.HasSuffix(filepath, "/") {
+		return fmt.Errorf("Filepath must not end in '/'")
+	}
+
+	req, err := http.NewRequest("GET", u, nil)
+	if err != nil {
+		return err
+	}
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	// Create parent directories
+	err = os.MkdirAll(path.Dir(filepath), 0755)
+	if err != nil {
+		return err
+	}
+
+	// Create file
+	file, err := os.Create(filepath)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	// Create progress bar
+	bar := createProgressBar(resp.ContentLength, barText, barText == "")
+	defer bar.Close()
+
+	// Copy data
+	_, err = io.Copy(io.MultiWriter(file, bar), resp.Body)
+	if err != nil {
+		return err
+	}
+
+	// Set file permissions
+	err = file.Chmod(perm)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

src/bpmlib/operations.go

@@ -0,0 +1,834 @@
+package bpmlib
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"os"
+	"path"
+	"slices"
+	"strings"
+	"text/tabwriter"
+)
+
+type BPMOperation struct {
+	Actions           []OperationAction
+	UnresolvedDepends []string
+	ModifiedFiles     map[string]string
+	CompilationJobs   int
+	RunChecks         bool
+	RootDir           string
+
+	compiledPackages   map[string]string
+	hasFetchedPackages bool
+}
+
+func (operation *BPMOperation) ActionsContainPackage(pkg string) bool {
+	for _, action := range operation.Actions {
+		if action.GetActionType() == "install" {
+			if action.(*InstallPackageAction).BpmPackage.PkgInfo.Name == pkg {
+				return true
+			}
+		} else if action.GetActionType() == "fetch" {
+			if action.(*FetchPackageAction).DatabaseEntry.Info.Name == pkg {
+				return true
+			}
+		} else if action.GetActionType() == "remove" {
+			if action.(*RemovePackageAction).BpmPackage.PkgInfo.Name == pkg {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+func (operation *BPMOperation) AppendAction(action OperationAction) {
+	operation.InsertActionAt(len(operation.Actions), action)
+}
+
+func (operation *BPMOperation) InsertActionAt(index int, action OperationAction) {
+	if len(operation.Actions) == index { // nil or empty slice or after last element
+		operation.Actions = append(operation.Actions, action)
+	} else {
+		operation.Actions = append(operation.Actions[:index+1], operation.Actions[index:]...) // index < len(a)
+		operation.Actions[index] = action
+	}
+}
+
+func (operation *BPMOperation) RemoveAction(pkg, actionType string) {
+	operation.Actions = slices.DeleteFunc(operation.Actions, func(a OperationAction) bool {
+		if a.GetActionType() != actionType {
+			return false
+		}
+		if a.GetActionType() == "install" {
+			return a.(*InstallPackageAction).BpmPackage.PkgInfo.Name == pkg
+		} else if a.GetActionType() == "fetch" {
+			return a.(*FetchPackageAction).DatabaseEntry.Info.Name == pkg
+		} else if a.GetActionType() == "remove" {
+			return a.(*RemovePackageAction).BpmPackage.PkgInfo.Name == pkg
+		}
+		return false
+	})
+}
+
+func (operation *BPMOperation) GetTotalDownloadSize() int64 {
+	var ret int64 = 0
+	for _, action := range operation.Actions {
+		if action.GetActionType() == "fetch" {
+			ret += action.(*FetchPackageAction).DatabaseEntry.DownloadSize
+		}
+	}
+	return ret
+}
+
+func (operation *BPMOperation) GetTotalInstalledSize() int64 {
+	var ret int64 = 0
+	for _, action := range operation.Actions {
+		if action.GetActionType() == "install" {
+			ret += action.(*InstallPackageAction).BpmPackage.GetInstalledSize()
+		} else if action.GetActionType() == "fetch" {
+			ret += action.(*FetchPackageAction).DatabaseEntry.InstalledSize
+		}
+	}
+	return ret
+}
+
+func (operation *BPMOperation) GetFinalActionSize(rootDir string) int64 {
+	var ret int64 = 0
+	for _, action := range operation.Actions {
+		if action.GetActionType() == "install" {
+			ret += action.(*InstallPackageAction).BpmPackage.GetInstalledSize()
+			if IsPackageInstalled(action.(*InstallPackageAction).BpmPackage.PkgInfo.Name, rootDir) {
+				ret -= GetPackage(action.(*InstallPackageAction).BpmPackage.PkgInfo.Name, rootDir).GetInstalledSize()
+			}
+		} else if action.GetActionType() == "fetch" {
+			ret += action.(*FetchPackageAction).DatabaseEntry.InstalledSize
+			if IsPackageInstalled(action.(*FetchPackageAction).DatabaseEntry.Info.Name, rootDir) {
+				ret -= action.(*FetchPackageAction).DatabaseEntry.InstalledSize
+			}
+		} else if action.GetActionType() == "remove" {
+			ret -= action.(*RemovePackageAction).BpmPackage.GetInstalledSize()
+		}
+	}
+	return ret
+}
+
+func (operation *BPMOperation) ResolveDependencies(installRuntimeDepends bool) {
+	// Discover resolved virtual packages
+	resolvedVirtualPackages := make(map[string]string)
+	for _, value := range slices.Clone(operation.Actions) {
+		var pkgInfo *PackageInfo
+		if value.GetActionType() == "install" {
+			action := value.(*InstallPackageAction)
+			pkgInfo = action.BpmPackage.PkgInfo
+		} else if value.GetActionType() == "fetch" {
+			action := value.(*FetchPackageAction)
+			pkgInfo = action.DatabaseEntry.Info
+		} else {
+			continue
+		}
+
+		for _, vpkg := range pkgInfo.Provides {
+			if _, ok := resolvedVirtualPackages[vpkg]; !ok {
+				resolvedVirtualPackages[vpkg] = pkgInfo.Name
+			}
+		}
+	}
+
+	// Discover all dependencies
+	pos := 0
+	for _, value := range slices.Clone(operation.Actions) {
+		var pkgInfo *PackageInfo
+		if value.GetActionType() == "install" {
+			action := value.(*InstallPackageAction)
+			pkgInfo = action.BpmPackage.PkgInfo
+		} else if value.GetActionType() == "fetch" {
+			action := value.(*FetchPackageAction)
+			pkgInfo = action.DatabaseEntry.Info
+		} else {
+			continue
+		}
+
+		resolved, unresolved := ResolveDependencies(pkgInfo, resolvedVirtualPackages, installRuntimeDepends, operation.RootDir)
+
+		// Append unresolved dependencies
+		operation.UnresolvedDepends = append(operation.UnresolvedDepends, unresolved...)
+		operation.UnresolvedDepends = removeDuplicates(operation.UnresolvedDepends)
+
+		for _, resolvedPkg := range resolved {
+			if !operation.ActionsContainPackage(resolvedPkg.DatabaseEntry.Info.Name) && resolvedPkg.DatabaseEntry.Info.Name != pkgInfo.Name {
+				operation.InsertActionAt(pos, &FetchPackageAction{
+					InstallationReason: resolvedPkg.InstallationReason,
+					DatabaseEntry:      resolvedPkg.DatabaseEntry,
+				})
+
+				for _, vpkg := range resolvedPkg.DatabaseEntry.Info.Provides {
+					if _, ok := resolvedVirtualPackages[vpkg]; !ok {
+						resolvedVirtualPackages[vpkg] = resolvedPkg.DatabaseEntry.Info.Name
+					}
+				}
+
+				pos++
+			}
+		}
+
+		pos++
+	}
+}
+
+func (operation *BPMOperation) Cleanup(cleanupMakeDepends bool) error {
+	// Get all installed packages
+	installedPackageNames, err := GetInstalledPackages(operation.RootDir)
+	if err != nil {
+		return fmt.Errorf("could not get installed packages: %s", err)
+	}
+	installedPackages := make([]*PackageInfo, len(installedPackageNames))
+	for i, value := range installedPackageNames {
+		pkgInfo := GetPackageInfo(value, operation.RootDir)
+		if pkgInfo == nil {
+			return errors.New("could not find installed package (" + value + ")")
+		}
+		installedPackages[i] = pkgInfo
+	}
+
+	// Get packages to remove
+	removeActions := make(map[string]*RemovePackageAction)
+	for _, action := range slices.Clone(operation.Actions) {
+		if action.GetActionType() == "remove" {
+			removeActions[action.(*RemovePackageAction).BpmPackage.PkgInfo.Name] = action.(*RemovePackageAction)
+		}
+	}
+
+	// Run BFS on all manually installed packages
+	visited := make([]string, 0)
+	for _, pkg := range installedPackages {
+		if getPackageLocalInfo(pkg.Name, operation.RootDir).GetInstallationReason() != InstallationReasonManual {
+			continue
+		}
+
+		queue := make([]*PackageInfo, 0)
+
+		queue = append(queue, pkg)
+
+		for len(queue) > 0 {
+			v := queue[len(queue)-1]
+			queue = queue[:len(queue)-1]
+
+			// Skip package if it's to be removed
+			if _, ok := removeActions[v.Name]; ok {
+				continue
+			}
+
+			// Mark package as visited
+			visited = append(visited, v.Name)
+
+			// Get all package dependencies
+			depends := v.Depends
+			depends = append(depends, v.RuntimeDepends...)
+			if cleanupMakeDepends && v.Type == "source" {
+				depends = append(depends, v.MakeDepends...)
+				depends = append(depends, v.CheckDepends...)
+			}
+
+			// Loop through all dependencies
+			for _, depend := range depends {
+				// Remove required version
+				depend, _, _ = SplitPkgNameAndVersion(depend)
+
+				// Resolve dependency
+				var dependPkgInfo *PackageInfo
+				if providers := GetVirtualPackageInfo(depend, operation.RootDir); len(providers) > 0 {
+					dependPkgInfo = providers[0]
+				} else {
+					dependPkgInfo = GetPackageInfo(depend, operation.RootDir)
+				}
+				if dependPkgInfo == nil {
+					continue
+				}
+
+				// Mark dependency as visited and add it to the queue
+				if !slices.Contains(visited, dependPkgInfo.Name) {
+					visited = append(visited, dependPkgInfo.Name)
+					queue = append(queue, dependPkgInfo)
+				}
+			}
+		}
+	}
+
+	// Remove all packages that were not discovered after running BFS
+	for _, pkg := range installedPackageNames {
+		// Do not add package removal action if there already is one
+		if _, ok := removeActions[pkg]; ok {
+			continue
+		}
+
+		if !slices.Contains(visited, pkg) {
+			bpmpkg := GetPackage(pkg, operation.RootDir)
+			if bpmpkg == nil {
+				return errors.New("Error: could not find installed package (" + pkg + ")")
+			}
+			operation.Actions = append(operation.Actions, &RemovePackageAction{BpmPackage: bpmpkg})
+		}
+	}
+
+	return nil
+}
+
+func (operation *BPMOperation) ReplaceObsoletePackages() {
+	for _, value := range slices.Clone(operation.Actions) {
+		var pkgInfo *PackageInfo
+		if value.GetActionType() == "install" {
+			action := value.(*InstallPackageAction)
+			pkgInfo = action.BpmPackage.PkgInfo
+
+		} else if value.GetActionType() == "fetch" {
+			action := value.(*FetchPackageAction)
+			pkgInfo = action.DatabaseEntry.Info
+		} else {
+			continue
+		}
+
+		for _, r := range pkgInfo.Replaces {
+			if bpmpkg := GetPackage(r, operation.RootDir); bpmpkg != nil && !operation.ActionsContainPackage(bpmpkg.PkgInfo.Name) {
+				operation.InsertActionAt(0, &RemovePackageAction{
+					BpmPackage: bpmpkg,
+				})
+			}
+		}
+	}
+}
+
+func (operation *BPMOperation) CheckForConflicts() map[string][]string {
+	conflicts := make(map[string][]string)
+
+	// Get installed packages
+	installedPackages := localPackageInformation[operation.RootDir]
+
+	// Get packages to be removed
+	removedPackages := make([]string, 0)
+	for _, value := range slices.Clone(operation.Actions) {
+		if value.GetActionType() != "remove" {
+			continue
+		}
+
+		removedPackages = append(removedPackages, value.(*RemovePackageAction).BpmPackage.PkgInfo.Name)
+	}
+
+	// Check for conflicts
+	for _, value := range slices.Clone(operation.Actions) {
+		var pkgInfo *PackageInfo
+		if value.GetActionType() == "install" {
+			pkgInfo = value.(*InstallPackageAction).BpmPackage.PkgInfo
+		} else if value.GetActionType() == "fetch" {
+			pkgInfo = value.(*FetchPackageAction).DatabaseEntry.Info
+		} else {
+			continue
+		}
+
+		// Check for conflicts with installed packages
+		for _, installedPkg := range installedPackages {
+			// Skip if package is to be removed
+			if slices.Contains(removedPackages, installedPkg.Name) {
+				continue
+			}
+
+			// Skip if same package
+			if pkgInfo.Name == installedPkg.Name {
+				continue
+			}
+
+			// Check for new package conflicts
+			if slices.Contains(pkgInfo.Conflicts, installedPkg.Name) {
+				conflicts[pkgInfo.Name] = append(conflicts[pkgInfo.Name], installedPkg.Name)
+			}
+			for _, vpkg := range installedPkg.Provides {
+				if slices.Contains(pkgInfo.Conflicts, vpkg) {
+					conflicts[pkgInfo.Name] = append(conflicts[pkgInfo.Name], vpkg+" ("+installedPkg.Name+")")
+				}
+			}
+
+			// Check for installed package conflicts
+			for _, vpkg := range pkgInfo.Provides {
+				if slices.Contains(installedPkg.Conflicts, vpkg) {
+					conflicts[installedPkg.Name] = append(conflicts[installedPkg.Name], vpkg+" ("+pkgInfo.Name+")")
+				}
+			}
+		}
+
+		// Check for conflicts with other new packages
+		for _, value := range slices.Clone(operation.Actions) {
+			var pkgInfo2 *PackageInfo
+			if value.GetActionType() == "install" {
+				pkgInfo2 = value.(*InstallPackageAction).BpmPackage.PkgInfo
+			} else if value.GetActionType() == "fetch" {
+				pkgInfo2 = value.(*FetchPackageAction).DatabaseEntry.Info
+			} else {
+				continue
+			}
+
+			// Skip if same package
+			if pkgInfo.Name == pkgInfo2.Name {
+				continue
+			}
+
+			// Check for other package conflicts
+			if slices.Contains(pkgInfo.Conflicts, pkgInfo2.Name) {
+				conflicts[pkgInfo.Name] = append(conflicts[pkgInfo.Name], pkgInfo2.Name)
+			}
+			for _, vpkg := range pkgInfo2.Provides {
+				if slices.Contains(pkgInfo.Conflicts, vpkg) {
+					conflicts[pkgInfo.Name] = append(conflicts[pkgInfo.Name], vpkg+" ("+pkgInfo2.Name+")")
+				}
+			}
+		}
+	}
+
+	return conflicts
+}
+
+func (operation *BPMOperation) ShowOperationSummary() {
+	if len(operation.Actions) == 0 {
+		fmt.Println("No action needs to be taken")
+		return
+	}
+
+	writer := tabwriter.NewWriter(os.Stdout, 6, 4, 6, ' ', 0)
+	fmt.Fprintln(writer, "Name\tVersion\tAction\tInstallation Reason\tFrom Source")
+
+	for _, value := range operation.Actions {
+		var pkgInfo *PackageInfo
+		var installationReason = InstallationReasonUnknown
+		if value.GetActionType() == "install" {
+			installationReason = value.(*InstallPackageAction).InstallationReason
+			pkgInfo = value.(*InstallPackageAction).BpmPackage.PkgInfo
+			if value.(*InstallPackageAction).SplitPackageToInstall != "" {
+				pkgInfo = pkgInfo.GetSplitPackageInfo(value.(*InstallPackageAction).SplitPackageToInstall)
+			}
+		} else if value.GetActionType() == "fetch" {
+			installationReason = value.(*FetchPackageAction).InstallationReason
+			pkgInfo = value.(*FetchPackageAction).DatabaseEntry.Info
+		} else {
+			pkgInfo = value.(*RemovePackageAction).BpmPackage.PkgInfo
+			fmt.Fprintf(writer, "%s\t%s\t%s\t%s\t%s\n", pkgInfo.Name, pkgInfo.GetFullVersion(), "Remove", "-", "-")
+			continue
+		}
+
+		installationReasonStr := ""
+		switch installationReason {
+		case InstallationReasonManual:
+			installationReasonStr = "Manual"
+		case InstallationReasonDependency:
+			installationReasonStr = "Dependency"
+		case InstallationReasonMakeDependency:
+			installationReasonStr = "Make dependency"
+		default:
+			installationReasonStr = "Unknown"
+		}
+
+		installedInfo := GetPackageInfo(pkgInfo.Name, operation.RootDir)
+		if installedInfo == nil {
+			fmt.Fprintf(writer, "%s\t%s\t%s\t%s\t%t\n", pkgInfo.Name, pkgInfo.GetFullVersion(), "Install", installationReasonStr, pkgInfo.Type == "source")
+		} else {
+			comparison := CompareVersions(pkgInfo.GetFullVersion(), installedInfo.GetFullVersion())
+			if comparison < 0 {
+				fmt.Fprintf(writer, "%s\t%s -> %s\t%s\t%s\t%t\n", pkgInfo.Name, installedInfo.GetFullVersion(), pkgInfo.GetFullVersion(), "Downgrade", installationReasonStr, pkgInfo.Type == "source")
+			} else if comparison > 0 {
+				fmt.Fprintf(writer, "%s\t%s -> %s\t%s\t%s\t%t\n", pkgInfo.Name, installedInfo.GetFullVersion(), pkgInfo.GetFullVersion(), "Upgrade", installationReasonStr, pkgInfo.Type == "source")
+			} else {
+				fmt.Fprintf(writer, "%s\t%s\t%s\t%s\t%t\n", pkgInfo.Name, pkgInfo.GetFullVersion(), "Reinstall", installationReasonStr, pkgInfo.Type == "source")
+			}
+		}
+	}
+
+	writer.Flush()
+	fmt.Println()
+
+	if operation.RootDir != "/" {
+		fmt.Println("Warning: Operating in " + operation.RootDir)
+	}
+	if operation.GetTotalDownloadSize() > 0 {
+		fmt.Printf("%s will be downloaded to complete this operation\n", BytesToHumanReadable(operation.GetTotalDownloadSize()))
+	}
+	if operation.GetFinalActionSize(operation.RootDir) > 0 {
+		fmt.Printf("A total of %s will be installed after the operation finishes\n", BytesToHumanReadable(operation.GetFinalActionSize(operation.RootDir)))
+	} else if operation.GetFinalActionSize(operation.RootDir) < 0 {
+		fmt.Printf("A total of %s will be freed after the operation finishes\n", strings.TrimPrefix(BytesToHumanReadable(operation.GetFinalActionSize(operation.RootDir)), "-"))
+	}
+}
+
+func (operation *BPMOperation) ShowSourcePackageContent() (sourcePackagesShown int, err error) {
+	// Fetch packages
+	if !operation.hasFetchedPackages {
+		err = operation.FetchPackages()
+		if err != nil {
+			return 0, err
+		}
+	}
+
+	for _, action := range operation.Actions {
+		if action.GetActionType() != "install" {
+			continue
+		}
+		if action.(*InstallPackageAction).BpmPackage.PkgInfo.Type != "source" {
+			continue
+		}
+
+		err = showPackageFiles(action.(*InstallPackageAction).File)
+		if err != nil {
+			return 0, err
+		}
+
+		sourcePackagesShown++
+	}
+
+	return sourcePackagesShown, nil
+}
+
+func (operation *BPMOperation) GetOptionalDependencies() (optionalDepends map[string][]string) {
+	optionalDepends = make(map[string][]string)
+
+	// Find all optional dependencies
+	for _, value := range slices.Clone(operation.Actions) {
+		var pkgInfo *PackageInfo
+		if value.GetActionType() == "install" {
+			action := value.(*InstallPackageAction)
+			pkgInfo = action.BpmPackage.PkgInfo
+		} else if value.GetActionType() == "fetch" {
+			action := value.(*FetchPackageAction)
+			pkgInfo = action.DatabaseEntry.Info
+		} else {
+			continue
+		}
+
+		for _, depend := range pkgInfo.OptionalDepends {
+			// Get optional dependency name
+			dependSplit := strings.SplitN(depend, ":", 2)
+			dependName, _, _ := SplitPkgNameAndVersion(dependSplit[0])
+
+			// Skip if dependency is already installed
+			if IsPackageInstalled(dependName, operation.RootDir) {
+				continue
+			}
+
+			// Skip if not a new dependency of the package
+			if installedPkg := GetPackage(pkgInfo.Name, operation.RootDir); installedPkg != nil && slices.ContainsFunc(installedPkg.PkgInfo.OptionalDepends, func(n string) bool {
+				// Remove optional dependency comment
+				n = strings.SplitN(n, ":", 2)[0]
+
+				// Remove required version
+				n, _, _ = SplitPkgNameAndVersion(n)
+
+				return n == dependName
+			}) {
+				continue
+			}
+
+			if len(dependSplit) == 2 {
+				optionalDepends[pkgInfo.Name] = append(optionalDepends[pkgInfo.Name], fmt.Sprintf("%s (%s)", dependSplit[0], dependSplit[1]))
+			} else {
+				optionalDepends[pkgInfo.Name] = append(optionalDepends[pkgInfo.Name], dependName)
+			}
+		}
+	}
+
+	return
+}
+
+func (operation *BPMOperation) RunPreHooks(verbose bool) error {
+	// Return if hooks directory does not exist
+	if stat, err := os.Stat(path.Join(operation.RootDir, "var/lib/bpm/hooks")); err != nil || !stat.IsDir() {
+		return nil
+	}
+
+	// Get directory entries in hooks directory
+	dirEntries, err := os.ReadDir(path.Join(operation.RootDir, "var/lib/bpm/hooks"))
+	if err != nil {
+		return err
+	}
+
+	// Find all hooks, validate and execute them
+	for _, entry := range dirEntries {
+		if entry.Type().IsRegular() && strings.HasSuffix(entry.Name(), ".bpmhook") {
+			hook, err := createHook(path.Join(operation.RootDir, "var/lib/bpm/hooks", entry.Name()))
+			if err != nil {
+				log.Printf("Error while reading hook (%s): %s", entry.Name(), err)
+			}
+
+			if !hook.TriggerPreOperation {
+				continue
+			}
+
+			err = hook.Execute(operation.ModifiedFiles, false, verbose, operation.RootDir)
+			if err != nil {
+				log.Printf("Warning: could not execute hook (%s): %s\n", entry.Name(), err)
+				continue
+			}
+		}
+	}
+
+	return nil
+}
+
+func (operation *BPMOperation) RunPostHooks(verbose bool) error {
+	// Return if hooks directory does not exist
+	if stat, err := os.Stat(path.Join(operation.RootDir, "var/lib/bpm/hooks")); err != nil || !stat.IsDir() {
+		return nil
+	}
+
+	// Get directory entries in hooks directory
+	dirEntries, err := os.ReadDir(path.Join(operation.RootDir, "var/lib/bpm/hooks"))
+	if err != nil {
+		return err
+	}
+
+	// Find all hooks, validate and execute them
+	for _, entry := range dirEntries {
+		if entry.Type().IsRegular() && strings.HasSuffix(entry.Name(), ".bpmhook") {
+			hook, err := createHook(path.Join(operation.RootDir, "var/lib/bpm/hooks", entry.Name()))
+			if err != nil {
+				log.Printf("Error while reading hook (%s): %s", entry.Name(), err)
+			}
+
+			if hook.TriggerPreOperation {
+				continue
+			}
+
+			err = hook.Execute(operation.ModifiedFiles, false, verbose, operation.RootDir)
+			if err != nil {
+				log.Printf("Warning: could not execute hook (%s): %s\n", entry.Name(), err)
+				continue
+			}
+		}
+	}
+
+	return nil
+}
+
+func (operation *BPMOperation) FetchPackages() (err error) {
+	// Fetch packages from databases
+	if slices.ContainsFunc(operation.Actions, func(action OperationAction) bool {
+		return action.GetActionType() == "fetch"
+	}) {
+		fmt.Println("Fetching packages from available databases...")
+
+		// Create map for fetched packages
+		fetchedPackages := make(map[string]string)
+
+		for i, action := range operation.Actions {
+			if action.GetActionType() != "fetch" {
+				continue
+			}
+
+			// Get database entry
+			entry := action.(*FetchPackageAction).DatabaseEntry
+
+			// Create bpmpkg variable
+			var bpmpkg *BPMPackage
+
+			// Check if package has already been fetched from download link
+			if fetchedFilepath, ok := fetchedPackages[entry.Filepath]; !ok {
+				// Fetch package from database
+				fetchedPackage, err := entry.Database.FetchPackage(entry.Info.Name)
+				if err != nil {
+					return fmt.Errorf("could not fetch package (%s): %s\n", entry.Info.Name, err)
+				}
+
+				// Read fetched package
+				bpmpkg, err = ReadPackage(fetchedPackage)
+				if err != nil {
+					return fmt.Errorf("could not fetch package (%s): %s\n", entry.Info.Name, err)
+				}
+
+				// Add fetched package to map
+				fetchedPackages[entry.Filepath] = fetchedPackage
+			} else {
+				// Read fetched package
+				bpmpkg, err = ReadPackage(fetchedFilepath)
+				if err != nil {
+					return fmt.Errorf("could not read package (%s): %s\n", entry.Info.Name, err)
+				}
+
+				// Get size of fetched archive
+				stat, err := os.Stat(fetchedFilepath)
+				if err != nil {
+					return err
+				}
+
+				bar := createProgressBar(stat.Size(), "Downloading "+entry.Info.Name, false)
+				bar.Set64(stat.Size())
+				bar.Close()
+			}
+
+			if bpmpkg.PkgInfo.IsSplitPackage() {
+				operation.Actions[i] = &InstallPackageAction{
+					File:                  fetchedPackages[entry.Filepath],
+					InstallationReason:    action.(*FetchPackageAction).InstallationReason,
+					BpmPackage:            bpmpkg,
+					SplitPackageToInstall: entry.Info.Name,
+				}
+			} else {
+				operation.Actions[i] = &InstallPackageAction{
+					File:               fetchedPackages[entry.Filepath],
+					InstallationReason: action.(*FetchPackageAction).InstallationReason,
+					BpmPackage:         bpmpkg,
+				}
+			}
+		}
+	}
+
+	operation.hasFetchedPackages = true
+
+	return nil
+}
+
+func (operation *BPMOperation) GetModifiedFiles() {
+	// Get modified files
+	for _, action := range operation.Actions {
+		if action.GetActionType() == "install" {
+			installAction := action.(*InstallPackageAction)
+			isUpgrade := IsPackageInstalled(installAction.BpmPackage.PkgInfo.Name, operation.RootDir)
+
+			for _, pkgFile := range installAction.BpmPackage.PkgFiles {
+				operation.ModifiedFiles[pkgFile.Path] = "install"
+				if isUpgrade {
+					operation.ModifiedFiles[pkgFile.Path] = "upgrade"
+				}
+			}
+		}
+		if action.GetActionType() == "remove" {
+			removeAction := action.(*RemovePackageAction)
+
+			for _, pkgFile := range removeAction.BpmPackage.PkgFiles {
+				operation.ModifiedFiles[pkgFile.Path] = "remove"
+			}
+		}
+	}
+}
+
+func (operation *BPMOperation) Execute(verbose, force bool) (err error) {
+	// Fetch packages
+	if !operation.hasFetchedPackages {
+		err = operation.FetchPackages()
+		if err != nil {
+			return err
+		}
+	}
+
+	// Determine words to be used for the following message
+	words := make([]string, 0)
+	if slices.ContainsFunc(operation.Actions, func(action OperationAction) bool {
+		return action.GetActionType() == "install"
+	}) {
+		words = append(words, "Installing")
+	}
+
+	if slices.ContainsFunc(operation.Actions, func(action OperationAction) bool {
+		return action.GetActionType() == "remove"
+	}) {
+		words = append(words, "Removing")
+	}
+
+	if len(words) == 0 {
+		return nil
+	}
+	fmt.Printf("%s packages...\n", strings.Join(words, "/"))
+
+	// Installing/Removing packages from system
+	for _, action := range operation.Actions {
+		if action.GetActionType() == "remove" {
+			pkgInfo := action.(*RemovePackageAction).BpmPackage.PkgInfo
+			err := removePackage(pkgInfo.Name, verbose, operation.RootDir)
+			if err != nil {
+				return fmt.Errorf("could not remove package (%s): %s\n", pkgInfo.Name, err)
+			}
+		} else if action.GetActionType() == "install" {
+			value := action.(*InstallPackageAction)
+			fileToInstall := value.File
+			bpmpkg := value.BpmPackage
+			var err error
+
+			// Compile package if type is 'source'
+			if bpmpkg.PkgInfo.Type == "source" {
+				// Get path to compiled package directory
+				compiledDir := path.Join(operation.RootDir, "/var/cache/bpm/compiled/")
+
+				// Create compiled package directory if not exists
+				if _, err := os.Stat(compiledDir); err != nil {
+					err := os.MkdirAll(compiledDir, 0755)
+					if err != nil {
+						return err
+					}
+				}
+
+				// Get package name to install
+				pkgNameToInstall := bpmpkg.PkgInfo.Name
+				if bpmpkg.PkgInfo.IsSplitPackage() {
+					pkgNameToInstall = value.SplitPackageToInstall
+				}
+
+				// Compile source package if not compiled already
+				if _, ok := operation.compiledPackages[pkgNameToInstall]; !ok {
+					outputBpmPackages, err := CompileSourcePackage(value.File, compiledDir, operation.CompilationJobs, !operation.RunChecks, false, verbose)
+					if err != nil {
+						return fmt.Errorf("could not compile source package (%s): %s\n", value.File, err)
+					}
+
+					// Add compiled packages to slice
+					for pkgName, pkgFile := range outputBpmPackages {
+						operation.compiledPackages[pkgName] = pkgFile
+					}
+				}
+
+				// Set values
+				fileToInstall = operation.compiledPackages[pkgNameToInstall]
+				bpmpkg, err = ReadPackage(fileToInstall)
+				if err != nil {
+					return fmt.Errorf("could not read package (%s): %s\n", fileToInstall, err)
+				}
+			}
+
+			if value.InstallationReason != InstallationReasonManual {
+				err = installPackage(fileToInstall, value.InstallationReason, operation.RootDir, verbose, true)
+			} else {
+				err = installPackage(fileToInstall, value.InstallationReason, operation.RootDir, verbose, force)
+			}
+			if err != nil {
+				return fmt.Errorf("could not install package (%s): %s\n", bpmpkg.PkgInfo.Name, err)
+			}
+		}
+	}
+
+	return nil
+}
+
+type OperationAction interface {
+	GetActionType() string
+}
+
+type InstallPackageAction struct {
+	File                  string
+	InstallationReason    InstallationReason
+	SplitPackageToInstall string
+	BpmPackage            *BPMPackage
+}
+
+func (action *InstallPackageAction) GetActionType() string {
+	return "install"
+}
+
+type FetchPackageAction struct {
+	InstallationReason InstallationReason
+	DatabaseEntry      *BPMDatabaseEntry
+}
+
+func (action *FetchPackageAction) GetActionType() string {
+	return "fetch"
+}
+
+type RemovePackageAction struct {
+	BpmPackage *BPMPackage
+}
+
+func (action *RemovePackageAction) GetActionType() string {
+	return "remove"
+}

src/bpmlib/tarball.go

@@ -0,0 +1,209 @@
+package bpmlib
+
+import (
+	"archive/tar"
+	"errors"
+	"io"
+	"os"
+	"path"
+	"strings"
+)
+
+type tarballFileReader struct {
+	tarReader *tar.Reader
+	file      *os.File
+}
+
+func listTarballContent(tarballPath string) (content []string, err error) {
+	file, err := os.Open(tarballPath)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	tr := tar.NewReader(file)
+	for {
+		header, err := tr.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return nil, err
+		}
+
+		switch header.Typeflag {
+		case tar.TypeDir:
+			continue
+		default:
+			content = append(content, header.Name)
+		}
+	}
+
+	return content, nil
+}
+
+func readTarballFile(tarballPath, fileToExtract string) (*tarballFileReader, error) {
+	file, err := os.Open(tarballPath)
+	if err != nil {
+		return nil, err
+	}
+
+	tr := tar.NewReader(file)
+	for {
+		header, err := tr.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return nil, err
+		}
+		if header.Name == fileToExtract {
+			if header.Typeflag != tar.TypeReg {
+				return nil, errors.New("file to extract must be a regular file")
+			}
+
+			return &tarballFileReader{
+				tarReader: tr,
+				file:      file,
+			}, nil
+		}
+	}
+
+	return nil, errors.New("could not file in tarball")
+}
+
+func extractTarballFile(tarballPath, fileToExtract string, workingDirectory string, uid, gid int) (err error) {
+	file, err := os.Open(tarballPath)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	tr := tar.NewReader(file)
+	for {
+		header, err := tr.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+
+		// Skip if filename does not match
+		if header.Name != fileToExtract {
+			continue
+		}
+
+		// Trim directory name from header name
+		header.Name = strings.Split(header.Name, "/")[len(strings.Split(header.Name, "/"))-1]
+		outputPath := path.Join(workingDirectory, header.Name)
+
+		switch header.Typeflag {
+		case tar.TypeReg:
+			// Create file and set permissions
+			file, err = os.Create(outputPath)
+			if err != nil {
+				return err
+			}
+			err := file.Chmod(header.FileInfo().Mode())
+			if err != nil {
+				return err
+			}
+			if uid >= 0 && gid >= 0 {
+				err = file.Chown(uid, gid)
+				if err != nil {
+					return err
+				}
+			}
+
+			// Copy data to file
+			_, err = io.Copy(file, tr)
+			if err != nil {
+				return err
+			}
+
+			// Close file
+			file.Close()
+		default:
+			continue
+		}
+	}
+
+	return nil
+}
+
+func extractTarballDirectory(tarballPath, directoryToExtract, workingDirectory string, uid, gid int) (err error) {
+	file, err := os.Open(tarballPath)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	tr := tar.NewReader(file)
+	for {
+		header, err := tr.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+
+		if strings.HasPrefix(header.Name, directoryToExtract+"/") {
+			// Skip directory to extract
+			if strings.TrimRight(header.Name, "/") == workingDirectory {
+				continue
+			}
+
+			// Trim directory name from header name
+			header.Name = strings.TrimPrefix(header.Name, directoryToExtract+"/")
+			outputPath := path.Join(workingDirectory, header.Name)
+
+			switch header.Typeflag {
+			case tar.TypeDir:
+				// Create directory
+				err := os.MkdirAll(outputPath, 0755)
+				if err != nil {
+					return err
+				}
+
+				// Set directory owner
+				if uid >= 0 && gid >= 0 {
+					err = os.Chown(outputPath, uid, gid)
+					if err != nil {
+						return err
+					}
+				}
+			case tar.TypeReg:
+				// Create file and set permissions
+				file, err = os.Create(outputPath)
+				if err != nil {
+					return err
+				}
+				err := file.Chmod(header.FileInfo().Mode())
+				if err != nil {
+					return err
+				}
+				if uid >= 0 && gid >= 0 {
+					err = file.Chown(uid, gid)
+					if err != nil {
+						return err
+					}
+				}
+
+				// Copy data to file
+				_, err = io.Copy(file, tr)
+				if err != nil {
+					return err
+				}
+
+				// Close file
+				file.Close()
+			default:
+				continue
+			}
+		}
+	}
+
+	return nil
+}

src/bpmlib/utils.go

@@ -0,0 +1,143 @@
+package bpmlib
+
+import (
+	"fmt"
+	"io"
+	"math"
+	"os"
+	"path"
+	"syscall"
+	"time"
+
+	version "github.com/knqyf263/go-rpm-version"
+	"github.com/schollz/progressbar/v3"
+)
+
+type BPMLock struct {
+	file *os.File
+	path string
+}
+
+func LockBPM(rootDir string) (*BPMLock, error) {
+	// Create cache directory if it doesn't already exist
+	err := os.MkdirAll(path.Join(rootDir, "/var/cache/bpm"), 0755)
+	if err != nil {
+		return nil, err
+	}
+
+	// Create file
+	f, err := os.Create(path.Join(rootDir, "var/cache/bpm/bpm.lock"))
+	if err != nil {
+		return nil, err
+	}
+
+	// Get exclusive file lock on file
+	err = syscall.Flock(int(f.Fd()), syscall.LOCK_EX|syscall.LOCK_NB)
+	if err != nil {
+		return nil, err
+	}
+
+	return &BPMLock{f, path.Join(rootDir, "var/cache/bpm/bpm.lock")}, nil
+}
+
+func (lock *BPMLock) Unlock() error {
+	err := lock.file.Close()
+	if err != nil {
+		return err
+	}
+
+	err = os.Remove(lock.path)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func GetArch() string {
+	uname := syscall.Utsname{}
+	err := syscall.Uname(&uname)
+	if err != nil {
+		return "unknown"
+	}
+
+	var byteString [65]byte
+	var indexLength int
+	for ; uname.Machine[indexLength] != 0; indexLength++ {
+		byteString[indexLength] = uint8(uname.Machine[indexLength])
+	}
+	return string(byteString[:indexLength])
+}
+
+func CompareVersions(version1, version2 string) int {
+	v1 := version.NewVersion(version1)
+	v2 := version.NewVersion(version2)
+
+	return v1.Compare(v2)
+}
+
+func createProgressBar(max int64, description string, hideBar bool) *progressbar.ProgressBar {
+	var output io.Writer
+	if hideBar {
+		output = io.Discard
+	} else {
+		output = os.Stderr
+	}
+
+	if len(description) < 40 {
+		for i := len(description); i < 40; i++ {
+			description += " "
+		}
+	}
+	if len(description) > 40 {
+		overflow := len(description) - 37
+		description = description[:len(description)-overflow] + "..."
+	}
+
+	return progressbar.NewOptions64(max,
+		progressbar.OptionSetDescription(description),
+		progressbar.OptionSetWriter(output),
+		progressbar.OptionShowBytes(true),
+		progressbar.OptionShowTotalBytes(true),
+		progressbar.OptionSetWidth(20),
+		progressbar.OptionThrottle(65*time.Millisecond),
+		progressbar.OptionShowCount(),
+		progressbar.OptionOnCompletion(func() {
+			fmt.Fprint(output, "\n")
+		}),
+		progressbar.OptionSpinnerType(14),
+		progressbar.OptionSetRenderBlankState(true),
+		progressbar.OptionSetTheme(progressbar.ThemeASCII))
+}
+
+func stringSliceRemove(s []string, r string) []string {
+	for i, v := range s {
+		if v == r {
+			return append(s[:i], s[i+1:]...)
+		}
+	}
+	return s
+}
+
+func BytesToHumanReadable(b int64) string {
+	bf := float64(b)
+	for _, unit := range []string{"", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi"} {
+		if math.Abs(bf) < 1024.0 {
+			return fmt.Sprintf("%3.1f%sB", bf, unit)
+		}
+		bf /= 1024.0
+	}
+	return fmt.Sprintf("%.1fYiB", bf)
+}
+
+func removeDuplicates[T comparable](sliceList []T) []T {
+	allKeys := make(map[T]bool)
+	list := []T{}
+	for _, item := range sliceList {
+		if _, value := allKeys[item]; !value {
+			allKeys[item] = true
+			list = append(list, item)
+		}
+	}
+	return list
+}

test_packages/x86_64/bpm-utils/files/usr/bin/bpm-create

@@ -1,28 +0,0 @@
-#!/bin/bash
-if [ $# -eq 0 ]
-then
-  echo "No output package name given!"
-  exit 1
-fi
-
-output=$1
-
-echo "Creating package with the name $output..."
-
-if [ -d files ]; then
-  echo "files/ directory found"
-else
-  echo "files/ directory not found in $PWD"
-  exit 1
-fi
-
-if [ -f pkg.info ]; then
-  echo "pkg.info file found"
-else
-  echo "pkg.info file not found in $PWD"
-  exit 1
-fi
-
-echo "Creating $output.bpm package..."
-
-tar -czf $output.bpm files/ pkg.info

test_packages/x86_64/bpm-utils/pkg.info

@@ -1,7 +0,0 @@
-name: bpm-utils
-description: Utilities to create BPM packages
-version: 1.0.0
-url: https://gitlab.com/bubble-package-manager/bpm/
-license: GPL3
-architecture: x86_64
-type: binary

test_packages/x86_64/bpm/pkg.info

@@ -1,7 +0,0 @@
-name: bpm
-description: The Bubble Package Manager
-version: 0.0.9
-url: https://gitlab.com/bubble-package-manager/bpm/
-license: GPL3
-architecture: x86_64
-type: binary

test_packages/x86_64/hello/pkg.info

@@ -1,5 +0,0 @@
-name: hello
-description: A simple hello world program
-version: 1.0
-architecture: x86_64
-type: binary

test_packages/x86_64/htop-src/pkg.info

@@ -1,8 +0,0 @@
-name: htop
-description: An interactive process viewer
-version: 3.3.0
-url: https://github.com/htop-dev/htop
-license: GPL2
-architecture: x86_64
-type: source
-#make_depends: git

test_packages/x86_64/htop-src/source.sh

@@ -1,20 +0,0 @@
-# This file is read and executed by BPM to compile htop. It will run inside a temporary folder in /tmp during execution
-echo "Compiling htop..."
-# Creating 'source' directory
-mkdir source
-# Cloning the git repository into the 'source' directory
-git clone https://github.com/htop-dev/htop.git source
-# Changing directory into 'source'
-cd source
-# Configuring and making htop according to the installation instructions in the repository
-./autogen.sh
-./configure --prefix=/usr
-make
-# Creating an 'output' directory in the root of the temporary directory created by BPM
-mkdir ./../output/
-# Setting $dir to the 'output' directory
-dir=$(pwd)/../output/
-# Installing htop to $dir
-make DESTDIR="$dir" install
-# The compilation is done. BPM will now copy the files from the 'output' directory into the root of your system
-echo "htop compilation complete!"