Merge branch 'remote-repositories-functionality' into 'master'

Finalize remote repositories functionality

See merge request bubble-package-manager/bpm!6

bpm_utils/config.go

@@ -1,34 +0,0 @@
-package bpm_utils
-
-import (
-	"gopkg.in/yaml.v3"
-	"os"
-)
-
-type BPMConfigStruct struct {
-	CompilationEnv    []string `yaml:"compilation_env"`
-	SilentCompilation bool     `yaml:"silent_compilation"`
-	BinaryOutputDir   string   `yaml:"binary_output_dir"`
-	CompilationDir    string   `yaml:"compilation_dir"`
-}
-
-var BPMConfig BPMConfigStruct = BPMConfigStruct{
-	CompilationEnv:    make([]string, 0),
-	SilentCompilation: false,
-	BinaryOutputDir:   "/var/lib/bpm/compiled/",
-	CompilationDir:    "/var/tmp/",
-}
-
-func ReadConfig() {
-	if _, err := os.Stat("/etc/bpm.conf"); os.IsNotExist(err) {
-		return
-	}
-	bytes, err := os.ReadFile("/etc/bpm.conf")
-	if err != nil {
-		return
-	}
-	err = yaml.Unmarshal(bytes, &BPMConfig)
-	if err != nil {
-		return
-	}
-}

config/bpm.conf

@@ -1,4 +1,8 @@
 compilation_env: []
 silent_compilation: false
 compilation_dir: "/var/tmp/"
-binary_output_dir: "/var/lib/bpm/compiled/"
+binary_output_dir: "/var/lib/bpm/compiled/"
+repositories:
+  - name: example-repository
+    source: https://my-repo.xyz/
+    disabled: true

go.mod

@@ -2,4 +2,7 @@ module gitlab.com/bubble-package-manager/bpm
 
 go 1.22
 
-require gopkg.in/yaml.v3 v3.0.1 // indirect
+require (
+	github.com/elliotchance/orderedmap/v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -1,3 +1,5 @@
+github.com/elliotchance/orderedmap/v2 v2.4.0 h1:6tUmMwD9F998FNpwFxA5E6NQvSpk2PVw7RKsVq3+2Cw=
+github.com/elliotchance/orderedmap/v2 v2.4.0/go.mod h1:85lZyVbpGaGvHvnKa7Qhx7zncAdBIBq6u56Hb1PRU5Q=
 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=

main.go

@@ -4,7 +4,8 @@ import (
 	"bufio"
 	"flag"
 	"fmt"
-	"gitlab.com/bubble-package-manager/bpm/bpm_utils"
+	"github.com/elliotchance/orderedmap/v2"
+	"gitlab.com/bubble-package-manager/bpm/utils"
 	"log"
 	"os"
 	"path/filepath"
@@ -17,23 +18,28 @@ import (
 /*   A simple-to-use package manager  */
 /* ---------------------------------- */
 
-var bpmVer = "0.3.2"
+var bpmVer = "0.4.1"
 
 var subcommand = "help"
 var subcommandArgs []string
 
 // Flags
 var rootDir = "/"
+var verbose = false
 var yesAll = false
 var buildSource = false
 var skipCheck = false
 var keepTempDir = false
-var forceInstall = false
+var force = false
 var pkgListNumbers = false
 var pkgListNames = false
+var reinstall = false
+var reinstallAll = false
+var noOptional = false
+var nosync = true
 
 func main() {
-	bpm_utils.ReadConfig()
+	utils.ReadConfig()
 	resolveFlags()
 	resolveCommand()
 }
@@ -45,7 +51,10 @@ const (
 	version
 	info
 	list
+	search
 	install
+	update
+	sync
 	remove
 	file
 )
@@ -58,8 +67,14 @@ func getCommandType() commandType {
 		return info
 	case "list":
 		return list
+	case "search":
+		return search
 	case "install":
 		return install
+	case "update":
+		return update
+	case "sync":
+		return sync
 	case "remove":
 		return remove
 	case "file":
@@ -81,20 +96,21 @@ func resolveCommand() {
 			return
 		}
 		for n, pkg := range packages {
-			info := bpm_utils.GetPackageInfo(pkg, rootDir, false)
+			var info *utils.PackageInfo
+			info = utils.GetPackageInfo(pkg, rootDir, false)
 			if info == nil {
-				fmt.Printf("Package (%s) could not be found\n", pkg)
-				continue
+				log.Fatalf("Error: package (%s) is not installed\n", pkg)
 			}
-			fmt.Print("----------------\n" + bpm_utils.CreateInfoFile(*info, true))
+			fmt.Println("----------------")
+			fmt.Println(utils.CreateReadableInfo(true, true, true, info, rootDir))
 			if n == len(packages)-1 {
 				fmt.Println("----------------")
 			}
 		}
 	case list:
-		packages, err := bpm_utils.GetInstalledPackages(rootDir)
+		packages, err := utils.GetInstalledPackages(rootDir)
 		if err != nil {
-			log.Fatalf("Could not get installed packages\nError: %s", err.Error())
+			log.Fatalf("Error: could not get installed packages: %s", err.Error())
 			return
 		}
 		if pkgListNumbers {
@@ -109,124 +125,411 @@ func resolveCommand() {
 				return
 			}
 			for n, pkg := range packages {
-				info := bpm_utils.GetPackageInfo(pkg, rootDir, false)
+				info := 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, true))
+				fmt.Println("----------------\n" + utils.CreateReadableInfo(true, true, true, info, rootDir))
 				if n == len(packages)-1 {
 					fmt.Println("----------------")
 				}
 			}
 		}
+	case search:
+		searchTerms := subcommandArgs
+		if len(searchTerms) == 0 {
+			log.Fatalf("Error: no search terms given")
+		}
+
+		for _, term := range searchTerms {
+			nameResults := make([]*utils.PackageInfo, 0)
+			descResults := make([]*utils.PackageInfo, 0)
+			for _, repo := range utils.BPMConfig.Repositories {
+				for _, entry := range repo.Entries {
+					if strings.Contains(entry.Info.Name, term) {
+						nameResults = append(nameResults, entry.Info)
+					} else if strings.Contains(entry.Info.Description, term) {
+						descResults = append(descResults, entry.Info)
+					}
+				}
+			}
+			results := append(nameResults, descResults...)
+			if len(results) == 0 {
+				log.Fatalf("Error: no results for term (%s) were found\n", term)
+			}
+			fmt.Printf("Results for term (%s)\n", term)
+			for i, result := range results {
+				fmt.Println("----------------")
+				fmt.Printf("%d) %s: %s (%s)\n", i+1, result.Name, result.Description, result.GetFullVersion())
+			}
+		}
 	case install:
 		if os.Getuid() != 0 {
-			fmt.Println("This subcommand needs to be run with superuser permissions")
-			os.Exit(0)
+			log.Fatalf("Error: this subcommand needs to be run with superuser permissions")
 		}
-		files := subcommandArgs
-		if len(files) == 0 {
-			fmt.Println("No files were given to install")
+		pkgs := subcommandArgs
+		if len(pkgs) == 0 {
+			fmt.Println("No packages or 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)
+
+		pkgsToInstall := orderedmap.NewOrderedMap[string, *struct {
+			bpmFile      string
+			isDependency bool
+			shouldFetch  bool
+			pkgInfo      *utils.PackageInfo
+		}]()
+		unresolvedDepends := make([]string, 0)
+
+		// Search for packages
+		for _, pkg := range pkgs {
+			if stat, err := os.Stat(pkg); err == nil && !stat.IsDir() {
+				pkgInfo, err := utils.ReadPackage(pkg)
+				if err != nil {
+					log.Fatalf("Error: could not read package: %s\n", err)
+				}
+				if !reinstall && utils.IsPackageInstalled(pkgInfo.Name, rootDir) && utils.GetPackageInfo(pkgInfo.Name, rootDir, true).GetFullVersion() == pkgInfo.GetFullVersion() {
+					continue
+				}
+				pkgsToInstall.Set(pkgInfo.Name, &struct {
+					bpmFile      string
+					isDependency bool
+					shouldFetch  bool
+					pkgInfo      *utils.PackageInfo
+				}{bpmFile: pkg, isDependency: false, shouldFetch: false, pkgInfo: pkgInfo})
+			} else {
+				entry, _, err := utils.GetRepositoryEntry(pkg)
+				if err != nil {
+					log.Fatalf("Error: could not find package (%s) in any repository\n", pkg)
+				}
+				if !reinstall && utils.IsPackageInstalled(entry.Info.Name, rootDir) && utils.GetPackageInfo(entry.Info.Name, rootDir, true).GetFullVersion() == entry.Info.GetFullVersion() {
+					continue
+				}
+				pkgsToInstall.Set(entry.Info.Name, &struct {
+					bpmFile      string
+					isDependency bool
+					shouldFetch  bool
+					pkgInfo      *utils.PackageInfo
+				}{bpmFile: "", isDependency: false, shouldFetch: true, pkgInfo: entry.Info})
 			}
-			if !yesAll {
-				fmt.Print("----------------\n" + bpm_utils.CreateInfoFile(*pkgInfo, true))
-				fmt.Println("----------------")
+		}
+
+		clone := pkgsToInstall.Copy()
+		pkgsToInstall = orderedmap.NewOrderedMap[string, *struct {
+			bpmFile      string
+			isDependency bool
+			shouldFetch  bool
+			pkgInfo      *utils.PackageInfo
+		}]()
+		for _, pkg := range clone.Keys() {
+			value, _ := clone.Get(pkg)
+			resolved, unresolved := value.pkgInfo.ResolveAll(&[]string{}, &[]string{}, value.pkgInfo.Type == "source", !noOptional, !reinstall, rootDir)
+			unresolvedDepends = append(unresolvedDepends, unresolved...)
+			for _, depend := range resolved {
+				if _, ok := pkgsToInstall.Get(depend); !ok && depend != value.pkgInfo.Name {
+					if !reinstallAll && utils.IsPackageInstalled(depend, rootDir) {
+						continue
+					}
+					entry, _, err := utils.GetRepositoryEntry(depend)
+					if err != nil {
+						log.Fatalf("Error: could not find package (%s) in any repository\n", pkg)
+					}
+					pkgsToInstall.Set(depend, &struct {
+						bpmFile      string
+						isDependency bool
+						shouldFetch  bool
+						pkgInfo      *utils.PackageInfo
+					}{bpmFile: "", isDependency: true, shouldFetch: true, pkgInfo: entry.Info})
+				}
 			}
-			verb := "install"
+			pkgsToInstall.Set(pkg, value)
+		}
+
+		// Show summary
+		if len(unresolvedDepends) != 0 {
+			if !force {
+				log.Fatalf("Error: the following dependencies could not be found in any repositories: %s\n", strings.Join(unresolvedDepends, ", "))
+			} else {
+				log.Println("Warning: The following dependencies could not be found in any repositories: " + strings.Join(unresolvedDepends, ", "))
+			}
+		}
+		if pkgsToInstall.Len() == 0 {
+			fmt.Println("All packages are up to date!")
+			os.Exit(0)
+		}
+
+		for _, pkg := range pkgsToInstall.Keys() {
+			value, _ := pkgsToInstall.Get(pkg)
+			pkgInfo := value.pkgInfo
+			installedInfo := utils.GetPackageInfo(pkgInfo.Name, rootDir, false)
+			sourceInfo := ""
 			if pkgInfo.Type == "source" {
-				if _, err := os.Stat("/bin/fakeroot"); os.IsNotExist(err) {
-					fmt.Printf("Skipping... cannot %s package (%s) due to fakeroot not being installed")
-					continue
+				if rootDir != "/" && !force {
+					log.Fatalf("Error: cannot compile and install source packages to a different root directory")
 				}
-				verb = "build"
+				sourceInfo = "(From Source)"
 			}
-			if !forceInstall {
-				if pkgInfo.Arch != "any" && 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, "/"); 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 installedInfo == nil {
+				fmt.Printf("%s: %s (Install) %s\n", pkgInfo.Name, pkgInfo.GetFullVersion(), sourceInfo)
+			} else if strings.Compare(pkgInfo.GetFullVersion(), installedInfo.GetFullVersion()) < 0 {
+				fmt.Printf("%s: %s -> %s (Downgrade) %s\n", pkgInfo.Name, installedInfo.GetFullVersion(), pkgInfo.GetFullVersion(), sourceInfo)
+			} else if strings.Compare(pkgInfo.GetFullVersion(), installedInfo.GetFullVersion()) > 0 {
+				fmt.Printf("%s: %s -> %s (Upgrade) %s\n", pkgInfo.Name, installedInfo.GetFullVersion(), pkgInfo.GetFullVersion(), sourceInfo)
+			} else {
+				fmt.Printf("%s: %s (Reinstall) %s\n", pkgInfo.Name, pkgInfo.GetFullVersion(), sourceInfo)
 			}
-			if rootDir != "/" {
-				fmt.Println("Warning: Operating in " + rootDir)
+		}
+		if rootDir != "/" {
+			fmt.Println("Warning: Operating in " + rootDir)
+		}
+		if !yesAll {
+			reader := bufio.NewReader(os.Stdin)
+			if pkgsToInstall.Len() == 1 {
+				fmt.Printf("Do you wish to install this package? [y\\N] ")
+			} else {
+				fmt.Printf("Do you wish to install these %d packages? [y\\N] ", pkgsToInstall.Len())
 			}
-			if !yesAll {
-				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-------")
-					}
-				}
+
+			text, _ := reader.ReadString('\n')
+			if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
+				fmt.Println("Cancelling...")
+				os.Exit(1)
 			}
-			if bpm_utils.IsPackageInstalled(pkgInfo.Name, rootDir) {
-				if !yesAll {
-					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
-					}
-				}
-			} else if !yesAll {
-				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
-				}
+		}
+
+		// Fetch packages from repositories
+		fmt.Println("Fetching packages from available repositories...")
+		for _, pkg := range pkgsToInstall.Keys() {
+			value, _ := pkgsToInstall.Get(pkg)
+			if !value.shouldFetch {
+				continue
+			}
+			entry, repo, err := utils.GetRepositoryEntry(pkg)
+			if err != nil {
+				log.Fatalf("Error: could not find package (%s) in any repository\n", pkg)
+			}
+			fetchedPackage, err := repo.FetchPackage(entry.Info.Name)
+			if err != nil {
+				log.Fatalf("Error: could not fetch package (%s): %s\n", pkg, err)
+			}
+			fmt.Printf("Package (%s) was successfully fetched!\n", value.pkgInfo.Name)
+			value.bpmFile = fetchedPackage
+			pkgsToInstall.Set(pkg, value)
+		}
+
+		// Install fetched packages
+		for _, pkg := range pkgsToInstall.Keys() {
+			value, _ := pkgsToInstall.Get(pkg)
+			pkgInfo := value.pkgInfo
+			var err error
+			if value.isDependency {
+				err = utils.InstallPackage(value.bpmFile, rootDir, verbose, true, buildSource, skipCheck, keepTempDir)
+			} else {
+				err = utils.InstallPackage(value.bpmFile, rootDir, verbose, force, buildSource, skipCheck, keepTempDir)
 			}
 
-			err = bpm_utils.InstallPackage(file, rootDir, forceInstall, buildSource, skipCheck, keepTempDir)
 			if err != nil {
 				if pkgInfo.Type == "source" && keepTempDir {
 					fmt.Println("BPM temp directory was created at /var/tmp/bpm_source-" + pkgInfo.Name)
 				}
-				log.Fatalf("Could not install package\nError: %s\n", err)
+				log.Fatalf("Error: could not install package (%s): %s\n", pkg, err)
+			}
+			fmt.Printf("Package (%s) was successfully installed\n", pkgInfo.Name)
+			if value.isDependency {
+				err := utils.SetInstallationReason(pkgInfo.Name, utils.Dependency, rootDir)
+				if err != nil {
+					log.Fatalf("Error: could not set installation reason for package: %s\n", err)
+				}
 			}
-			fmt.Printf("Package (%s) was successfully installed!\n", pkgInfo.Name)
 			if pkgInfo.Type == "source" && keepTempDir {
 				fmt.Println("** It is recommended you delete the temporary bpm folder in /var/tmp **")
 			}
 		}
+	case update:
+		if os.Getuid() != 0 {
+			log.Fatalf("Error: this subcommand needs to be run with superuser permissions")
+		}
+
+		// Sync repositories
+		if !nosync {
+			for _, repo := range utils.BPMConfig.Repositories {
+				fmt.Printf("Fetching package database for repository (%s)...\n", repo.Name)
+				err := repo.SyncLocalDatabase()
+				if err != nil {
+					log.Fatalf("Error: could not sync local database for repository (%s): %s\n", repo.Name, err)
+				}
+			}
+			fmt.Println("All package databases synced successfully!")
+		}
+
+		utils.ReadConfig()
+
+		// Get installed packages and check for updates
+		pkgs, err := utils.GetInstalledPackages(rootDir)
+		if err != nil {
+			log.Fatalf("Error: could not get installed packages: %s\n", err)
+		}
+		toUpdate := orderedmap.NewOrderedMap[string, *struct {
+			isDependency bool
+			entry        *utils.RepositoryEntry
+		}]()
+		for _, pkg := range pkgs {
+			entry, _, err := utils.GetRepositoryEntry(pkg)
+			if err != nil {
+				continue
+			}
+			installedInfo := utils.GetPackageInfo(pkg, rootDir, true)
+			if installedInfo == nil {
+				log.Fatalf("Error: could not get package info for (%s)\n", pkg)
+			}
+			if strings.Compare(entry.Info.GetFullVersion(), installedInfo.GetFullVersion()) > 0 {
+				toUpdate.Set(entry.Info.Name, &struct {
+					isDependency bool
+					entry        *utils.RepositoryEntry
+				}{isDependency: false, entry: entry})
+			} else if reinstall {
+				toUpdate.Set(entry.Info.Name, &struct {
+					isDependency bool
+					entry        *utils.RepositoryEntry
+				}{isDependency: false, entry: entry})
+			}
+		}
+		if toUpdate.Len() == 0 {
+			fmt.Println("All packages are up to date!")
+			os.Exit(0)
+		}
+
+		// Check for new dependencies in updated packages
+		unresolved := make([]string, 0)
+		clone := toUpdate.Copy()
+		for _, key := range clone.Keys() {
+			pkg, _ := clone.Get(key)
+			r, u := pkg.entry.Info.ResolveAll(&[]string{}, &[]string{}, pkg.entry.Info.Type == "source", !noOptional, true, rootDir)
+			unresolved = append(unresolved, u...)
+			for _, depend := range r {
+				if _, ok := toUpdate.Get(depend); !ok {
+					entry, _, err := utils.GetRepositoryEntry(depend)
+					if err != nil {
+						log.Fatalf("Error: could not find package (%s) in any repository\n", depend)
+					}
+					toUpdate.Set(depend, &struct {
+						isDependency bool
+						entry        *utils.RepositoryEntry
+					}{isDependency: true, entry: entry})
+				}
+			}
+		}
+
+		if len(unresolved) != 0 {
+			if !force {
+				log.Fatalf("Error: the following dependencies could not be found in any repositories: %s\n", strings.Join(unresolved, ", "))
+			} else {
+				log.Printf("Warning: the following dependencies could not be found in any repositories: %s\n", strings.Join(unresolved, ", "))
+			}
+		}
+
+		for _, key := range toUpdate.Keys() {
+			value, _ := toUpdate.Get(key)
+			installedInfo := utils.GetPackageInfo(value.entry.Info.Name, rootDir, true)
+			sourceInfo := ""
+			if value.entry.Info.Type == "source" {
+				sourceInfo = "(From Source)"
+			}
+			if installedInfo == nil {
+				fmt.Printf("%s: %s (Install) %s\n", value.entry.Info.Name, value.entry.Info.GetFullVersion(), sourceInfo)
+				continue
+			}
+			if strings.Compare(value.entry.Info.GetFullVersion(), installedInfo.GetFullVersion()) > 0 {
+				fmt.Printf("%s: %s -> %s (Upgrade) %s\n", value.entry.Info.Name, installedInfo.GetFullVersion(), value.entry.Info.GetFullVersion(), sourceInfo)
+			} else if reinstall {
+				fmt.Printf("%s: %s -> %s (Reinstall) %s\n", value.entry.Info.Name, installedInfo.GetFullVersion(), value.entry.Info.GetFullVersion(), sourceInfo)
+			}
+		}
+
+		// Update confirmation prompt
+		if !yesAll {
+			fmt.Printf("Are you sure you wish to update all %d packages? [y\\N] ", toUpdate.Len())
+			reader := bufio.NewReader(os.Stdin)
+			text, _ := reader.ReadString('\n')
+			if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
+				fmt.Println("Cancelling update...")
+				os.Exit(1)
+			}
+		}
+
+		// Fetch packages
+		pkgsToInstall := orderedmap.NewOrderedMap[string, *struct {
+			isDependency bool
+			entry        *utils.RepositoryEntry
+		}]()
+		fmt.Println("Fetching packages from available repositories...")
+		for _, pkg := range toUpdate.Keys() {
+			value, _ := toUpdate.Get(pkg)
+			entry, repo, err := utils.GetRepositoryEntry(pkg)
+			if err != nil {
+				log.Fatalf("Error: could not find package (%s) in any repository\n", pkg)
+			}
+			fetchedPackage, err := repo.FetchPackage(entry.Info.Name)
+			if err != nil {
+				log.Fatalf("Error: could not fetch package (%s): %s\n", pkg, err)
+			}
+			fmt.Printf("Package (%s) was successfully fetched!\n", value.entry.Info.Name)
+			pkgsToInstall.Set(fetchedPackage, value)
+		}
+
+		// Install fetched packages
+		for _, pkg := range pkgsToInstall.Keys() {
+			value, _ := pkgsToInstall.Get(pkg)
+			pkgInfo := value.entry.Info
+			var err error
+			if value.isDependency {
+				err = utils.InstallPackage(pkg, rootDir, verbose, true, buildSource, skipCheck, keepTempDir)
+			} else {
+				err = utils.InstallPackage(pkg, rootDir, verbose, force, buildSource, skipCheck, keepTempDir)
+			}
+
+			if err != nil {
+				if pkgInfo.Type == "source" && keepTempDir {
+					fmt.Println("BPM temp directory was created at /var/tmp/bpm_source-" + pkgInfo.Name)
+				}
+				log.Fatalf("Error: could not install package (%s): %s\n", pkg, err)
+			}
+			fmt.Printf("Package (%s) was successfully installed!\n", pkgInfo.Name)
+			if value.isDependency {
+				err := utils.SetInstallationReason(pkgInfo.Name, utils.Dependency, rootDir)
+				if err != nil {
+					log.Fatalf("Error: could not set installation reason for package: %s\n", err)
+				}
+			}
+			if pkgInfo.Type == "source" && keepTempDir {
+				fmt.Println("** It is recommended you delete the temporary bpm folder in /var/tmp **")
+			}
+		}
+	case sync:
+		if os.Getuid() != 0 {
+			log.Fatalf("Error: this subcommand needs to be run with superuser permissions")
+		}
+		if !yesAll {
+			fmt.Printf("Are you sure you wish to sync all databases? [y\\N] ")
+			reader := bufio.NewReader(os.Stdin)
+			text, _ := reader.ReadString('\n')
+			if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
+				fmt.Println("Cancelling sync...")
+				os.Exit(1)
+			}
+		}
+		for _, repo := range utils.BPMConfig.Repositories {
+			fmt.Printf("Fetching package database for repository (%s)...\n", repo.Name)
+			err := repo.SyncLocalDatabase()
+			if err != nil {
+				log.Fatalf("Error: could not sync local database for repository (%s): %s\n", repo.Name, err)
+			}
+		}
+		fmt.Println("All package databases synced successfully!")
 	case remove:
 		if os.Getuid() != 0 {
-			fmt.Println("This subcommand needs to be run with superuser permissions")
-			os.Exit(0)
+			log.Fatalf("Error: this subcommand needs to be run with superuser permissions")
 		}
 		packages := subcommandArgs
 		if len(packages) == 0 {
@@ -234,12 +537,12 @@ func resolveCommand() {
 			return
 		}
 		for _, pkg := range packages {
-			pkgInfo := bpm_utils.GetPackageInfo(pkg, rootDir, false)
+			pkgInfo := 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, true))
+			fmt.Println("----------------\n" + utils.CreateReadableInfo(false, false, false, pkgInfo, rootDir))
 			fmt.Println("----------------")
 			if rootDir != "/" {
 				fmt.Println("Warning: Operating in " + rootDir)
@@ -253,10 +556,10 @@ func resolveCommand() {
 					continue
 				}
 			}
-			err := bpm_utils.RemovePackage(pkg, rootDir)
+			err := utils.RemovePackage(pkg, verbose, rootDir)
 
 			if err != nil {
-				log.Fatalf("Could not remove package\nError: %s\n", err)
+				log.Fatalf("Error: could not remove package: %s\n", err)
 			}
 			fmt.Printf("Package (%s) was successfully removed!\n", pkgInfo.Name)
 		}
@@ -269,23 +572,23 @@ func resolveCommand() {
 		for _, file := range files {
 			absFile, err := filepath.Abs(file)
 			if err != nil {
-				log.Fatalf("Could not get absolute path of %s", file)
+				log.Fatalf("Error: could not get absolute path of file (%s)\n", file)
 			}
 			stat, err := os.Stat(absFile)
 			if os.IsNotExist(err) {
-				log.Fatalf(absFile + " does not exist!")
+				log.Fatalf("Error: file (%s) does not exist!\n", absFile)
 			}
-			pkgs, err := bpm_utils.GetInstalledPackages(rootDir)
+			pkgs, err := utils.GetInstalledPackages(rootDir)
 			if err != nil {
-				log.Fatalf("Could not get installed packages. Error %s", err.Error())
+				log.Fatalf("Error: could not get installed packages: %s\n", err.Error())
 			}
 
 			if !strings.HasPrefix(absFile, rootDir) {
-				log.Fatalf("Could not get relative path of %s to root path", absFile)
+				log.Fatalf("Error: could not get path of file (%s) relative to root path", absFile)
 			}
 			absFile, err = filepath.Rel(rootDir, absFile)
 			if err != nil {
-				log.Fatalf("Could not get relative path of %s to root path", absFile)
+				log.Fatalf("Error: could not get path of file (%s) relative to root path", absFile)
 			}
 			absFile = strings.TrimPrefix(absFile, "/")
 			if stat.IsDir() {
@@ -294,7 +597,7 @@ func resolveCommand() {
 
 			var pkgList []string
 			for _, pkg := range pkgs {
-				if slices.Contains(bpm_utils.GetPackageFiles(pkg, rootDir), absFile) {
+				if slices.Contains(utils.GetPackageFiles(pkg, rootDir), absFile) {
 					pkgList = append(pkgList, pkg)
 				}
 			}
@@ -318,21 +621,38 @@ func printHelp() {
 	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 [-R] | shows information on an installed package")
+	fmt.Println("-> bpm info [-R] <packages...> | shows information on an installed package")
 	fmt.Println("       -R=<path> lets you define the root path which will be used")
 	fmt.Println("-> bpm list [-R, -c, -n] | lists all installed packages")
 	fmt.Println("       -R=<path> lets you define the root path which will be used")
 	fmt.Println("       -c lists the amount of installed packages")
 	fmt.Println("       -n lists only the names of installed packages")
-	fmt.Println("-> bpm install [-R, -y, -f, -o, -c, -b, -k] <files...> | installs the following files")
+	fmt.Println("-> bpm search <search terms...> | Searches for packages through declared repositories")
+	fmt.Println("-> bpm install [-R, -v, -y, -f, -o, -c, -b, -k, --reinstall, --reinstall-all, --no-optional] <packages...> | installs the following files")
 	fmt.Println("       -R=<path> lets you define the root path which will be used")
+	fmt.Println("       -v Show additional information about what BPM is doing")
 	fmt.Println("       -y skips the confirmation prompt")
-	fmt.Println("       -f skips dependency and architecture checking")
+	fmt.Println("       -f skips dependency, conflict and architecture checking")
 	fmt.Println("       -o=<path> set the binary package output directory (defaults to /var/lib/bpm/compiled)")
 	fmt.Println("       -c=<path> set the compilation directory (defaults to /var/tmp)")
 	fmt.Println("       -b creates a binary package from a source package after compilation and saves it in the binary package output directory")
 	fmt.Println("       -k keeps the compilation directory created by BPM after source package installation")
-	fmt.Println("-> bpm remove [-R, -y] <packages...> | removes the following packages")
+	fmt.Println("       --reinstall Reinstalls packages even if they do not have a newer version available")
+	fmt.Println("       --reinstall-all Same as --reinstall but also reinstalls dependencies")
+	fmt.Println("       --no-optional Prevents installation of optional dependencies")
+	fmt.Println("-> bpm update [-R, -v, -y, -f, --reinstall, --no-sync] | updates all packages that are available in the repositories")
+	fmt.Println("       -R=<path> lets you define the root path which will be used")
+	fmt.Println("       -v Show additional information about what BPM is doing")
+	fmt.Println("       -y skips the confirmation prompt")
+	fmt.Println("       -f skips dependency, conflict and architecture checking")
+	fmt.Println("       --reinstall Fetches and reinstalls all packages even if they do not have a newer version available")
+	fmt.Println("       --no-sync Skips package database syncing")
+	fmt.Println("-> bpm sync [-R, -v, -y] | Syncs package databases without updating packages")
+	fmt.Println("       -R=<path> lets you define the root path which will be used")
+	fmt.Println("       -v Show additional information about what BPM is doing")
+	fmt.Println("       -y skips the confirmation prompt")
+	fmt.Println("-> bpm remove [-R, -v, -y] <packages...> | removes the following packages")
+	fmt.Println("       -v Show additional information about what BPM is doing")
 	fmt.Println("       -R=<path> lets you define the root path which will be used")
 	fmt.Println("       -y skips the confirmation prompt")
 	fmt.Println("-> bpm file [-R] <files...> | shows what packages the following packages are managed by")
@@ -354,17 +674,37 @@ func resolveFlags() {
 	// Install flags
 	installFlagSet := flag.NewFlagSet("Install flags", flag.ExitOnError)
 	installFlagSet.StringVar(&rootDir, "R", "/", "Set the destination root")
+	installFlagSet.BoolVar(&verbose, "v", false, "Show additional information about what BPM is doing")
 	installFlagSet.BoolVar(&yesAll, "y", false, "Skip confirmation prompts")
-	installFlagSet.StringVar(&bpm_utils.BPMConfig.BinaryOutputDir, "o", bpm_utils.BPMConfig.BinaryOutputDir, "Set the binary output directory")
-	installFlagSet.StringVar(&bpm_utils.BPMConfig.CompilationDir, "c", bpm_utils.BPMConfig.CompilationDir, "Set the compilation directory")
+	installFlagSet.StringVar(&utils.BPMConfig.BinaryOutputDir, "o", utils.BPMConfig.BinaryOutputDir, "Set the binary output directory")
+	installFlagSet.StringVar(&utils.BPMConfig.CompilationDir, "c", utils.BPMConfig.CompilationDir, "Set the compilation directory")
 	installFlagSet.BoolVar(&buildSource, "b", false, "Build binary package from source package")
 	installFlagSet.BoolVar(&skipCheck, "s", false, "Skip check function during source compilation")
 	installFlagSet.BoolVar(&keepTempDir, "k", false, "Keep temporary directory after source compilation")
-	installFlagSet.BoolVar(&forceInstall, "f", false, "Force installation by skipping architecture and dependency resolution")
+	installFlagSet.BoolVar(&force, "f", false, "Force installation by skipping architecture and dependency resolution")
+	installFlagSet.BoolVar(&reinstall, "reinstall", false, "Reinstalls packages even if they do not have a newer version available")
+	installFlagSet.BoolVar(&reinstallAll, "reinstall-all", false, "Same as --reinstall but also reinstalls dependencies")
+	installFlagSet.BoolVar(&noOptional, "no-optional", false, "Prevents installation of optional dependencies")
 	installFlagSet.Usage = printHelp
+	// Update flags
+	updateFlagSet := flag.NewFlagSet("Update flags", flag.ExitOnError)
+	updateFlagSet.StringVar(&rootDir, "R", "/", "Set the destination root")
+	updateFlagSet.BoolVar(&verbose, "v", false, "Show additional information about what BPM is doing")
+	updateFlagSet.BoolVar(&yesAll, "y", false, "Skip confirmation prompts")
+	updateFlagSet.BoolVar(&force, "f", false, "Force update by skipping architecture and dependency resolution")
+	updateFlagSet.BoolVar(&reinstall, "reinstall", false, "Fetches and reinstalls all packages even if they do not have a newer version available")
+	updateFlagSet.BoolVar(&nosync, "no-sync", false, "Skips package database syncing")
+	updateFlagSet.Usage = printHelp
+	// Sync flags
+	syncFlagSet := flag.NewFlagSet("Sync flags", flag.ExitOnError)
+	syncFlagSet.StringVar(&rootDir, "R", "/", "Set the destination root")
+	syncFlagSet.BoolVar(&verbose, "v", false, "Show additional information about what BPM is doing")
+	syncFlagSet.BoolVar(&yesAll, "y", false, "Skip confirmation prompts")
+	syncFlagSet.Usage = printHelp
 	// Remove flags
 	removeFlagSet := flag.NewFlagSet("Remove flags", flag.ExitOnError)
 	removeFlagSet.StringVar(&rootDir, "R", "/", "Set the destination root")
+	removeFlagSet.BoolVar(&verbose, "v", false, "Show additional information about what BPM is doing")
 	removeFlagSet.BoolVar(&yesAll, "y", false, "Skip confirmation prompts")
 	removeFlagSet.Usage = printHelp
 	// File flags
@@ -394,6 +734,18 @@ func resolveFlags() {
 				return
 			}
 			subcommandArgs = installFlagSet.Args()
+		} else if getCommandType() == update {
+			err := updateFlagSet.Parse(subcommandArgs)
+			if err != nil {
+				return
+			}
+			subcommandArgs = updateFlagSet.Args()
+		} else if getCommandType() == sync {
+			err := syncFlagSet.Parse(subcommandArgs)
+			if err != nil {
+				return
+			}
+			subcommandArgs = syncFlagSet.Args()
 		} else if getCommandType() == remove {
 			err := removeFlagSet.Parse(subcommandArgs)
 			if err != nil {
@@ -407,5 +759,8 @@ func resolveFlags() {
 			}
 			subcommandArgs = fileFlagSet.Args()
 		}
+		if reinstallAll {
+			reinstall = true
+		}
 	}
 }

utils/config.go

@@ -0,0 +1,49 @@
+package utils
+
+import (
+	"gopkg.in/yaml.v3"
+	"log"
+	"os"
+)
+
+type BPMConfigStruct struct {
+	CompilationEnv    []string      `yaml:"compilation_env"`
+	SilentCompilation bool          `yaml:"silent_compilation"`
+	BinaryOutputDir   string        `yaml:"binary_output_dir"`
+	CompilationDir    string        `yaml:"compilation_dir"`
+	Repositories      []*Repository `yaml:"repositories"`
+}
+
+var BPMConfig BPMConfigStruct
+
+func ReadConfig() {
+	if _, err := os.Stat("/etc/bpm.conf"); os.IsNotExist(err) {
+		log.Fatal(err)
+	}
+	bytes, err := os.ReadFile("/etc/bpm.conf")
+	if err != nil {
+		log.Fatal(err)
+	}
+	BPMConfig = BPMConfigStruct{
+		CompilationEnv:    make([]string, 0),
+		SilentCompilation: false,
+		BinaryOutputDir:   "/var/lib/bpm/compiled/",
+		CompilationDir:    "/var/tmp/",
+	}
+	err = yaml.Unmarshal(bytes, &BPMConfig)
+	if err != nil {
+		log.Fatal(err)
+	}
+	for i := len(BPMConfig.Repositories) - 1; i >= 0; i-- {
+		if BPMConfig.Repositories[i].Disabled != nil && *BPMConfig.Repositories[i].Disabled {
+			BPMConfig.Repositories = append(BPMConfig.Repositories[:i], BPMConfig.Repositories[i+1:]...)
+		}
+	}
+	for _, repo := range BPMConfig.Repositories {
+		repo.Entries = make(map[string]*RepositoryEntry)
+		err := repo.ReadLocalDatabase()
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+}

utils/general_utils.go

@@ -1,4 +1,4 @@
-package bpm_utils
+package utils
 
 import (
 	"io"

utils/package_utils.go

@@ -1,4 +1,4 @@
-package bpm_utils
+package utils
 
 import (
 	"archive/tar"
@@ -6,6 +6,7 @@ import (
 	"compress/gzip"
 	"errors"
 	"fmt"
+	"gopkg.in/yaml.v3"
 	"io"
 	"io/fs"
 	"os"
@@ -19,17 +20,61 @@ import (
 )
 
 type PackageInfo struct {
-	Name        string
-	Description string
-	Version     string
-	Url         string
-	License     string
-	Arch        string
-	Type        string
-	Keep        []string
-	Depends     []string
-	MakeDepends []string
-	Provides    []string
+	Name            string   `yaml:"name,omitempty"`
+	Description     string   `yaml:"description,omitempty"`
+	Version         string   `yaml:"version,omitempty"`
+	Revision        int      `yaml:"revision,omitempty"`
+	Url             string   `yaml:"url,omitempty"`
+	License         string   `yaml:"license,omitempty"`
+	Arch            string   `yaml:"architecture,omitempty"`
+	Type            string   `yaml:"type,omitempty"`
+	Keep            []string `yaml:"keep,omitempty"`
+	Depends         []string `yaml:"depends,omitempty"`
+	MakeDepends     []string `yaml:"make_depends,omitempty"`
+	OptionalDepends []string `yaml:"optional_depends,omitempty"`
+	Conflicts       []string `yaml:"conflicts,omitempty"`
+	Provides        []string `yaml:"provides,omitempty"`
+}
+
+func (pkgInfo *PackageInfo) GetFullVersion() string {
+	return pkgInfo.Version + "-" + strconv.Itoa(pkgInfo.Revision)
+}
+
+type InstallationReason string
+
+const (
+	Manual     InstallationReason = "manual"
+	Dependency InstallationReason = "dependency"
+	Unknown    InstallationReason = "unknown"
+)
+
+func GetInstallationReason(pkg, rootDir string) InstallationReason {
+	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
+	pkgDir := path.Join(installedDir, pkg)
+	if stat, err := os.Stat(path.Join(pkgDir, "installation_reason")); err != nil || stat.IsDir() {
+		return Manual
+	}
+	bytes, err := os.ReadFile(path.Join(pkgDir, "installation_reason"))
+	if err != nil {
+		return Unknown
+	}
+	reason := string(bytes)
+	if reason == "manual" {
+		return Manual
+	} else if reason == "dependency" {
+		return Dependency
+	}
+	return Unknown
+}
+
+func SetInstallationReason(pkg string, reason InstallationReason, rootDir string) error {
+	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
+	pkgDir := path.Join(installedDir, pkg)
+	err := os.WriteFile(path.Join(pkgDir, "installation_reason"), []byte(reason), 0644)
+	if err != nil {
+		return err
+	}
+	return nil
 }
 
 func GetPackageInfoRaw(filename string) (string, error) {
@@ -92,7 +137,7 @@ func ReadPackage(filename string) (*PackageInfo, error) {
 			if err != nil {
 				return nil, err
 			}
-			pkgInfo, err := ReadPackageInfo(string(bs), false)
+			pkgInfo, err := ReadPackageInfo(string(bs))
 			if err != nil {
 				return nil, err
 			}
@@ -266,114 +311,86 @@ func ExecutePackageScripts(filename, rootDir string, operation Operation, postOp
 	return nil
 }
 
-func ReadPackageInfo(contents string, defaultValues bool) (*PackageInfo, error) {
+func ReadPackageInfo(contents string) (*PackageInfo, error) {
 	pkgInfo := PackageInfo{
-		Name:        "",
-		Description: "",
-		Version:     "",
-		Url:         "",
-		License:     "",
-		Arch:        "",
-		Type:        "",
-		Keep:        nil,
-		Depends:     nil,
-		MakeDepends: nil,
-		Provides:    nil,
+		Name:            "",
+		Description:     "",
+		Version:         "",
+		Revision:        1,
+		Url:             "",
+		License:         "",
+		Arch:            "",
+		Type:            "",
+		Keep:            make([]string, 0),
+		Depends:         make([]string, 0),
+		MakeDepends:     make([]string, 0),
+		OptionalDepends: make([]string, 0),
+		Conflicts:       make([]string, 0),
+		Provides:        make([]string, 0),
 	}
-	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":
-			if strings.Contains(split[1], " ") {
-				return nil, errors.New("the " + split[0] + " field cannot contain spaces")
-			}
-			pkgInfo.Name = split[1]
-		case "description":
-			pkgInfo.Description = split[1]
-		case "version":
-			if strings.Contains(split[1], " ") {
-				return nil, errors.New("the " + split[0] + " field cannot contain spaces")
-			}
-			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 "keep":
-			pkgInfo.Keep = strings.Split(strings.Replace(split[1], " ", "", -1), ",")
-			pkgInfo.Keep = stringSliceRemoveEmpty(pkgInfo.Keep)
-		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)
-		}
+	err := yaml.Unmarshal([]byte(contents), &pkgInfo)
+	if err != nil {
+		return nil, err
 	}
-	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")
-		}
+	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.Revision <= 0 {
+		return nil, errors.New("this package contains a revision number less or equal to 0")
+	} 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")
+	}
+	for i := 0; i < len(pkgInfo.Keep); i++ {
+		pkgInfo.Keep[i] = strings.TrimPrefix(pkgInfo.Keep[i], "/")
 	}
 	return &pkgInfo, nil
 }
 
-func CreateInfoFile(pkgInfo PackageInfo, keepSourceFields bool) 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"
+func CreateInfoFile(pkgInfo *PackageInfo) string {
+	bytes, err := yaml.Marshal(&pkgInfo)
+	if err != nil {
+		return ""
 	}
-	if pkgInfo.License != "" {
-		ret = ret + "license: " + pkgInfo.License + "\n"
-	}
-	ret = ret + "architecture: " + pkgInfo.Arch + "\n"
-	ret = ret + "type: " + pkgInfo.Type + "\n"
-	if len(pkgInfo.Keep) > 0 {
-		ret = ret + "keep (" + strconv.Itoa(len(pkgInfo.Keep)) + "): " + strings.Join(pkgInfo.Keep, ",") + "\n"
-	}
-	if len(pkgInfo.Depends) > 0 {
-		ret = ret + "depends (" + strconv.Itoa(len(pkgInfo.Depends)) + "): " + strings.Join(pkgInfo.Depends, ",") + "\n"
-	}
-	if len(pkgInfo.MakeDepends) > 0 && keepSourceFields {
-		ret = ret + "make_depends (" + strconv.Itoa(len(pkgInfo.MakeDepends)) + "): " + strings.Join(pkgInfo.MakeDepends, ",") + "\n"
-	}
-	if len(pkgInfo.Provides) > 0 {
-		ret = ret + "provides (" + strconv.Itoa(len(pkgInfo.Provides)) + "): " + strings.Join(pkgInfo.Provides, ",") + "\n"
-	}
-	return ret
+	return string(bytes)
 }
 
-func extractPackage(pkgInfo *PackageInfo, filename, rootDir string) (error, []string) {
+func CreateReadableInfo(showArchitecture, showType, showPackageRelations bool, pkgInfo *PackageInfo, rootDir string) string {
+	ret := make([]string, 0)
+	appendArray := func(label string, array []string) {
+		if len(array) == 0 {
+			return
+		}
+		ret = append(ret, fmt.Sprintf("%s: %s", label, strings.Join(array, ", ")))
+	}
+	ret = append(ret, "Name: "+pkgInfo.Name)
+	ret = append(ret, "Description: "+pkgInfo.Description)
+	ret = append(ret, "Version: "+pkgInfo.GetFullVersion())
+	ret = append(ret, "URL: "+pkgInfo.Url)
+	ret = append(ret, "License: "+pkgInfo.License)
+	if showArchitecture {
+		ret = append(ret, "Architecture: "+pkgInfo.Arch)
+	}
+	if showType {
+		ret = append(ret, "Type: "+pkgInfo.Type)
+	}
+	if showPackageRelations {
+		appendArray("Dependencies", pkgInfo.Depends)
+		appendArray("Make Dependencies", pkgInfo.MakeDepends)
+		appendArray("Optional dependencies", pkgInfo.OptionalDepends)
+		appendArray("Conflicting packages", pkgInfo.Conflicts)
+		appendArray("Provided packages", pkgInfo.Provides)
+
+	}
+	ret = append(ret, "Installation Reason: "+string(GetInstallationReason(pkgInfo.Name, rootDir)))
+	return strings.Join(ret, "\n")
+}
+
+func extractPackage(pkgInfo *PackageInfo, verbose bool, filename, rootDir string) (error, []string) {
 	var files []string
 	if !IsPackageInstalled(pkgInfo.Name, rootDir) {
 		err := ExecutePackageScripts(filename, rootDir, Install, false)
@@ -415,22 +432,46 @@ func extractPackage(pkgInfo *PackageInfo, filename, rootDir string) (error, []st
 						return err, nil
 					}
 				} else {
-					fmt.Println("Creating Directory: " + extractFilename)
+					if verbose {
+						fmt.Println("Creating Directory: " + extractFilename)
+					}
 				}
 			case tar.TypeReg:
+				skip := false
 				if _, err := os.Stat(extractFilename); err == nil {
-					if slices.Contains(pkgInfo.Keep, trimmedName) {
-						fmt.Println("Skipping File: " + extractFilename + "(File is configured to be kept during installs/updates)")
-						files = append(files, trimmedName)
-						continue
+					for _, k := range pkgInfo.Keep {
+						if strings.HasSuffix(k, "/") {
+							if strings.HasPrefix(trimmedName, k) {
+								if verbose {
+									fmt.Println("Skipping File: " + extractFilename + " (Containing directory is set to be kept during installs/updates)")
+								}
+								files = append(files, strings.TrimPrefix(header.Name, "files/"))
+								skip = true
+								continue
+							}
+						} else {
+							if trimmedName == k {
+								if verbose {
+									fmt.Println("Skipping File: " + extractFilename + " (File is configured to be kept during installs/updates)")
+								}
+								files = append(files, strings.TrimPrefix(header.Name, "files/"))
+								skip = true
+								continue
+							}
+						}
 					}
 				}
+				if skip {
+					continue
+				}
 				err := os.Remove(extractFilename)
 				if err != nil && !os.IsNotExist(err) {
 					return err, nil
 				}
 				outFile, err := os.Create(extractFilename)
-				fmt.Println("Creating File: " + extractFilename)
+				if verbose {
+					fmt.Println("Creating File: " + extractFilename)
+				}
 				files = append(files, strings.TrimPrefix(header.Name, "files/"))
 				if err != nil {
 					return err, nil
@@ -446,7 +487,9 @@ func extractPackage(pkgInfo *PackageInfo, filename, rootDir string) (error, []st
 					return err, nil
 				}
 			case tar.TypeSymlink:
-				fmt.Println("Creating Symlink: " + extractFilename + " -> " + header.Linkname)
+				if verbose {
+					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) {
@@ -457,7 +500,9 @@ func extractPackage(pkgInfo *PackageInfo, filename, rootDir string) (error, []st
 					return err, nil
 				}
 			case tar.TypeLink:
-				fmt.Println("Detected Hard Link: " + extractFilename + " -> " + path.Join(rootDir, strings.TrimPrefix(header.Linkname, "files/")))
+				if verbose {
+					fmt.Println("Detected Hard Link: " + extractFilename + " -> " + path.Join(rootDir, 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)
@@ -465,12 +510,14 @@ func extractPackage(pkgInfo *PackageInfo, filename, rootDir string) (error, []st
 					return err, nil
 				}
 			default:
-				return errors.New("ExtractTarGz: unknown type: " + strconv.Itoa(int(header.Typeflag)) + " in " + extractFilename), nil
+				return errors.New("unknown type (" + strconv.Itoa(int(header.Typeflag)) + ") in " + extractFilename), nil
 			}
 		}
 	}
 	for extractFilename, destination := range seenHardlinks {
-		fmt.Println("Creating Hard Link: " + extractFilename + " -> " + path.Join(rootDir, destination))
+		if verbose {
+			fmt.Println("Creating Hard Link: " + extractFilename + " -> " + path.Join(rootDir, destination))
+		}
 		err := os.Link(path.Join(rootDir, destination), extractFilename)
 		if err != nil {
 			return err, nil
@@ -496,7 +543,7 @@ func isSplitPackage(filename string) bool {
 	return true
 }
 
-func compilePackage(pkgInfo *PackageInfo, filename, rootDir string, binaryPkgFromSrc, skipCheck, keepTempDir bool) (error, []string) {
+func compilePackage(pkgInfo *PackageInfo, filename, rootDir string, verbose, binaryPkgFromSrc, skipCheck, keepTempDir bool) (error, []string) {
 	var files []string
 	if !IsPackageInstalled(pkgInfo.Name, rootDir) {
 		err := ExecutePackageScripts(filename, rootDir, Install, false)
@@ -525,7 +572,9 @@ func compilePackage(pkgInfo *PackageInfo, filename, rootDir string, binaryPkgFro
 	if err != nil {
 		return err, nil
 	}
-	fmt.Println("Creating temp directory at: " + temp)
+	if verbose {
+		fmt.Println("Creating temp directory at: " + temp)
+	}
 	err = os.Mkdir(temp, 0755)
 	if err != nil {
 		return err, nil
@@ -552,7 +601,9 @@ func compilePackage(pkgInfo *PackageInfo, filename, rootDir string, binaryPkgFro
 						return err, nil
 					}
 				} else {
-					fmt.Println("Creating Directory: " + extractFilename)
+					if verbose {
+						fmt.Println("Creating Directory: " + extractFilename)
+					}
 					err = os.Chown(extractFilename, 65534, 65534)
 					if err != nil {
 						return err, nil
@@ -564,7 +615,9 @@ func compilePackage(pkgInfo *PackageInfo, filename, rootDir string, binaryPkgFro
 					return err, nil
 				}
 				outFile, err := os.Create(extractFilename)
-				fmt.Println("Creating File: " + extractFilename)
+				if verbose {
+					fmt.Println("Creating File: " + extractFilename)
+				}
 				if err != nil {
 					return err, nil
 				}
@@ -583,11 +636,15 @@ func compilePackage(pkgInfo *PackageInfo, filename, rootDir string, binaryPkgFro
 					return err, nil
 				}
 			case tar.TypeSymlink:
-				fmt.Println("Skipping symlink (Bundling symlinks in source packages is not supported)")
+				if verbose {
+					fmt.Println("Skipping symlink (Bundling symlinks in source packages is not supported)")
+				}
 			case tar.TypeLink:
-				fmt.Println("Skipping hard link (Bundling hard links in source packages is not supported)")
+				if verbose {
+					fmt.Println("Skipping hard link (Bundling hard links in source packages is not supported)")
+				}
 			default:
-				return errors.New("ExtractTarGz: unknown type: " + strconv.Itoa(int(header.Typeflag)) + " in " + extractFilename), nil
+				return errors.New("unknown type (" + strconv.Itoa(int(header.Typeflag)) + ") in " + extractFilename), nil
 			}
 		}
 		if header.Name == "source.sh" {
@@ -725,6 +782,7 @@ fi
 	cmd.Env = append(cmd.Env, fmt.Sprintf("BPM_PKG_NAME=%s", pkgInfo.Name))
 	cmd.Env = append(cmd.Env, fmt.Sprintf("BPM_PKG_DESC=%s", pkgInfo.Description))
 	cmd.Env = append(cmd.Env, fmt.Sprintf("BPM_PKG_VERSION=%s", pkgInfo.Version))
+	cmd.Env = append(cmd.Env, fmt.Sprintf("BPM_PKG_REVISION=%d", pkgInfo.Revision))
 	cmd.Env = append(cmd.Env, fmt.Sprintf("BPM_PKG_URL=%s", pkgInfo.Url))
 	cmd.Env = append(cmd.Env, fmt.Sprintf("BPM_PKG_ARCH=%s", pkgInfo.Arch))
 	depends := make([]string, len(pkgInfo.Depends))
@@ -779,12 +837,16 @@ fi
 					return err
 				}
 			} else {
-				fmt.Println("Creating Directory: " + extractFilename)
+				if verbose {
+					fmt.Println("Creating Directory: " + extractFilename)
+				}
 			}
 		} else if d.Type().IsRegular() {
 			if _, err := os.Stat(extractFilename); err == nil {
 				if slices.Contains(pkgInfo.Keep, relFilename) {
-					fmt.Println("Skipping File: " + extractFilename + "(File is configured to be kept during installs/updates)")
+					if verbose {
+						fmt.Println("Skipping File: " + extractFilename + "(File is configured to be kept during installs/updates)")
+					}
 					files = append(files, relFilename)
 					return nil
 				}
@@ -794,7 +856,9 @@ fi
 				return err
 			}
 			outFile, err := os.Create(extractFilename)
-			fmt.Println("Creating File: " + extractFilename)
+			if verbose {
+				fmt.Println("Creating File: " + extractFilename)
+			}
 			files = append(files, relFilename)
 			if err != nil {
 				return err
@@ -830,7 +894,9 @@ fi
 			if err != nil && !os.IsNotExist(err) {
 				return err
 			}
-			fmt.Println("Creating Symlink: "+extractFilename, " -> "+link)
+			if verbose {
+				fmt.Println("Creating Symlink: "+extractFilename, " -> "+link)
+			}
 			files = append(files, relFilename)
 			err = os.Symlink(link, extractFilename)
 			if err != nil {
@@ -849,7 +915,7 @@ fi
 		compiledInfo = *pkgInfo
 		compiledInfo.Type = "binary"
 		compiledInfo.Arch = GetArch()
-		err = os.WriteFile(path.Join(temp, "pkg.info"), []byte(CreateInfoFile(compiledInfo, false)), 0644)
+		err = os.WriteFile(path.Join(temp, "pkg.info"), []byte(CreateInfoFile(&compiledInfo)), 0644)
 		if err != nil {
 			return err, nil
 		}
@@ -869,7 +935,7 @@ fi
 			}
 		}
 		sed := fmt.Sprintf("s/output/files/")
-		fileName := compiledInfo.Name + "-" + compiledInfo.Version + "-" + compiledInfo.Arch + ".bpm"
+		fileName := compiledInfo.Name + "-" + compiledInfo.GetFullVersion() + "-" + compiledInfo.Arch + ".bpm"
 		cmd := exec.Command("/usr/bin/fakeroot", "-i fakeroot_file", "tar", "-czvpf", fileName, "pkg.info", "output/", "--transform", sed)
 		if !BPMConfig.SilentCompilation {
 			cmd.Stdin = os.Stdin
@@ -909,7 +975,7 @@ fi
 	return nil, files
 }
 
-func InstallPackage(filename, rootDir string, force, binaryPkgFromSrc, skipCheck, keepTempDir bool) error {
+func InstallPackage(filename, rootDir string, verbose, force, binaryPkgFromSrc, skipCheck, keepTempDir bool) error {
 	if _, err := os.Stat(filename); os.IsNotExist(err) {
 		return err
 	}
@@ -927,12 +993,12 @@ func InstallPackage(filename, rootDir string, force, binaryPkgFromSrc, skipCheck
 		if pkgInfo.Arch != "any" && pkgInfo.Arch != GetArch() {
 			return errors.New("cannot install a package with a different architecture")
 		}
-		if unresolved := CheckDependencies(pkgInfo, rootDir); len(unresolved) != 0 {
-			return errors.New("Could not resolve all dependencies. Missing " + strings.Join(unresolved, ", "))
+		if unresolved := pkgInfo.CheckDependencies(pkgInfo.Type == "source", true, rootDir); len(unresolved) != 0 {
+			return errors.New("the following dependencies are not installed: " + strings.Join(unresolved, ", "))
 		}
 	}
 	if pkgInfo.Type == "binary" {
-		err, i := extractPackage(pkgInfo, filename, rootDir)
+		err, i := extractPackage(pkgInfo, verbose, filename, rootDir)
 		if err != nil {
 			return err
 		}
@@ -941,13 +1007,13 @@ func InstallPackage(filename, rootDir string, force, binaryPkgFromSrc, skipCheck
 		if isSplitPackage(filename) {
 			return errors.New("BPM is unable to install split source packages")
 		}
-		err, i := compilePackage(pkgInfo, filename, rootDir, binaryPkgFromSrc, skipCheck, keepTempDir)
+		err, i := compilePackage(pkgInfo, filename, rootDir, verbose, binaryPkgFromSrc, skipCheck, keepTempDir)
 		if err != nil {
 			return err
 		}
 		files = i
 	} else {
-		return errors.New("Unknown package type: " + pkgInfo.Type)
+		return errors.New("unknown package type: " + pkgInfo.Type)
 	}
 	slices.Sort(files)
 	slices.Reverse(files)
@@ -1023,7 +1089,7 @@ func InstallPackage(filename, rootDir string, force, binaryPkgFromSrc, skipCheck
 	}
 
 	if len(filesDiff) != 0 {
-		fmt.Println("Removing obsolete files")
+		fmt.Println("Removing obsolete files...")
 		var symlinks []string
 		for _, f := range filesDiff {
 			f = path.Join(rootDir, f)
@@ -1049,14 +1115,18 @@ func InstallPackage(filename, rootDir string, force, binaryPkgFromSrc, skipCheck
 					return err
 				}
 				if len(dir) == 0 {
-					fmt.Println("Removing: " + f)
+					if verbose {
+						fmt.Println("Removing: " + f)
+					}
 					err := os.Remove(f)
 					if err != nil {
 						return err
 					}
 				}
 			} else {
-				fmt.Println("Removing: " + f)
+				if verbose {
+					fmt.Println("Removing: " + f)
+				}
 				err := os.Remove(f)
 				if err != nil {
 					return err
@@ -1082,7 +1152,9 @@ func InstallPackage(filename, rootDir string, force, binaryPkgFromSrc, skipCheck
 						return err
 					}
 					removals++
-					fmt.Println("Removing: " + f)
+					if verbose {
+						fmt.Println("Removing: " + f)
+					}
 				} else if err != nil {
 					return err
 				}
@@ -1144,24 +1216,75 @@ func GetSourceScript(filename string) (string, error) {
 	return "", errors.New("package does not contain a source.sh file")
 }
 
-func CheckDependencies(pkgInfo *PackageInfo, rootDir string) []string {
-	var unresolved []string
-	for _, dependency := range pkgInfo.Depends {
-		if !IsPackageInstalled(dependency, rootDir) {
-			unresolved = append(unresolved, dependency)
-		}
+func (pkgInfo *PackageInfo) GetAllDependencies(checkMake, checkOptional bool) []string {
+	allDepends := make([]string, 0)
+	allDepends = append(allDepends, pkgInfo.Depends...)
+	if checkMake {
+		allDepends = append(allDepends, pkgInfo.MakeDepends...)
 	}
-	return unresolved
+	if checkOptional {
+		allDepends = append(allDepends, pkgInfo.OptionalDepends...)
+	}
+	return allDepends
 }
 
-func CheckMakeDependencies(pkgInfo *PackageInfo, rootDir string) []string {
-	var unresolved []string
-	for _, dependency := range pkgInfo.MakeDepends {
-		if !IsPackageInstalled(dependency, "/") {
-			unresolved = append(unresolved, dependency)
+func (pkgInfo *PackageInfo) CheckDependencies(checkMake, checkOptional bool, rootDir string) []string {
+	var ret []string
+	for _, dependency := range pkgInfo.Depends {
+		if !IsPackageProvided(dependency, rootDir) {
+			ret = append(ret, dependency)
 		}
 	}
-	return unresolved
+	if checkMake {
+		for _, dependency := range pkgInfo.MakeDepends {
+			if !IsPackageProvided(dependency, rootDir) {
+				ret = append(ret, dependency)
+			}
+		}
+	}
+	if checkOptional {
+		for _, dependency := range pkgInfo.OptionalDepends {
+			if !IsPackageProvided(dependency, rootDir) {
+				ret = append(ret, dependency)
+			}
+		}
+	}
+
+	return ret
+}
+
+func (pkgInfo *PackageInfo) CheckConflicts(rootDir string) []string {
+	var ret []string
+	for _, conflict := range pkgInfo.Conflicts {
+		if IsPackageInstalled(conflict, rootDir) {
+			ret = append(ret, conflict)
+		}
+	}
+	return ret
+}
+
+func (pkgInfo *PackageInfo) ResolveAll(resolved, unresolved *[]string, checkMake, checkOptional, ignoreInstalled bool, rootDir string) ([]string, []string) {
+	*unresolved = append(*unresolved, pkgInfo.Name)
+	for _, depend := range pkgInfo.GetAllDependencies(checkMake, checkOptional) {
+		if !slices.Contains(*resolved, depend) {
+			if slices.Contains(*unresolved, depend) || (ignoreInstalled && IsPackageInstalled(depend, rootDir)) {
+				continue
+			}
+			entry, _, err := GetRepositoryEntry(depend)
+			if err != nil {
+				if !slices.Contains(*unresolved, depend) {
+					*unresolved = append(*unresolved, depend)
+				}
+				continue
+			}
+			entry.Info.ResolveAll(resolved, unresolved, checkMake, checkOptional, ignoreInstalled, rootDir)
+		}
+	}
+	if !slices.Contains(*resolved, pkgInfo.Name) {
+		*resolved = append(*resolved, pkgInfo.Name)
+	}
+	*unresolved = stringSliceRemove(*unresolved, pkgInfo.Name)
+	return *resolved, *unresolved
 }
 
 func IsPackageInstalled(pkg, rootDir string) bool {
@@ -1173,6 +1296,26 @@ func IsPackageInstalled(pkg, rootDir string) bool {
 	return true
 }
 
+func IsPackageProvided(pkg, rootDir string) bool {
+	pkgs, err := GetInstalledPackages(rootDir)
+	if err != nil {
+		return false
+	}
+	for _, p := range pkgs {
+		if p == pkg {
+			return true
+		}
+		i := GetPackageInfo(p, rootDir, true)
+		if i == nil {
+			continue
+		}
+		if slices.Contains(i.Provides, pkg) {
+			return true
+		}
+	}
+	return false
+}
+
 func GetInstalledPackages(rootDir string) ([]string, error) {
 	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
 	items, err := os.ReadDir(installedDir)
@@ -1229,14 +1372,14 @@ func GetPackageInfo(pkg, rootDir string, defaultValues bool) *PackageInfo {
 	if err != nil {
 		return nil
 	}
-	info, err := ReadPackageInfo(string(bs), defaultValues)
+	info, err := ReadPackageInfo(string(bs))
 	if err != nil {
 		return nil
 	}
 	return info
 }
 
-func RemovePackage(pkg, rootDir string) error {
+func RemovePackage(pkg string, verbose bool, rootDir string) error {
 	installedDir := path.Join(rootDir, "var/lib/bpm/installed/")
 	pkgDir := path.Join(installedDir, pkg)
 	pkgInfo := GetPackageInfo(pkg, rootDir, false)
@@ -1271,14 +1414,18 @@ func RemovePackage(pkg, rootDir string) error {
 				return err
 			}
 			if len(dir) == 0 {
-				fmt.Println("Removing: " + file)
+				if verbose {
+					fmt.Println("Removing: " + file)
+				}
 				err := os.Remove(file)
 				if err != nil {
 					return err
 				}
 			}
 		} else {
-			fmt.Println("Removing: " + file)
+			if verbose {
+				fmt.Println("Removing: " + file)
+			}
 			err := os.Remove(file)
 			if err != nil {
 				return err
@@ -1304,7 +1451,9 @@ func RemovePackage(pkg, rootDir string) error {
 					return err
 				}
 				removals++
-				fmt.Println("Removing: " + file)
+				if verbose {
+					fmt.Println("Removing: " + file)
+				}
 			} else if err != nil {
 				return err
 			}
@@ -1323,6 +1472,7 @@ func RemovePackage(pkg, rootDir string) error {
 		cmd.Env = append(cmd.Env, fmt.Sprintf("BPM_PKG_NAME=%s", pkgInfo.Name))
 		cmd.Env = append(cmd.Env, fmt.Sprintf("BPM_PKG_DESC=%s", pkgInfo.Description))
 		cmd.Env = append(cmd.Env, fmt.Sprintf("BPM_PKG_VERSION=%s", pkgInfo.Version))
+		cmd.Env = append(cmd.Env, fmt.Sprintf("BPM_PKG_REVISION=%d", pkgInfo.Revision))
 		cmd.Env = append(cmd.Env, fmt.Sprintf("BPM_PKG_URL=%s", pkgInfo.Url))
 		cmd.Env = append(cmd.Env, fmt.Sprintf("BPM_PKG_ARCH=%s", pkgInfo.Arch))
 		depends := make([]string, len(pkgInfo.Depends))
@@ -1347,6 +1497,8 @@ func RemovePackage(pkg, rootDir string) error {
 	if err != nil {
 		return err
 	}
-	fmt.Println("Removing: " + pkgDir)
+	if verbose {
+		fmt.Println("Removing: " + pkgDir)
+	}
 	return nil
 }

utils/repo_utils.go

@@ -0,0 +1,166 @@
+package utils
+
+import (
+	"errors"
+	"gopkg.in/yaml.v3"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"path"
+	"strings"
+)
+
+type Repository struct {
+	Name     string `yaml:"name"`
+	Source   string `yaml:"source"`
+	Disabled *bool  `yaml:"disabled"`
+	Entries  map[string]*RepositoryEntry
+}
+
+type RepositoryEntry struct {
+	Info     *PackageInfo `yaml:"info"`
+	Download string       `yaml:"download"`
+}
+
+func (repo *Repository) ContainsPackage(pkg string) bool {
+	_, ok := repo.Entries[pkg]
+	return ok
+}
+
+func (repo *Repository) ReadLocalDatabase() error {
+	repoFile := "/var/lib/bpm/repositories/" + repo.Name + ".bpmdb"
+	if _, err := os.Stat(repoFile); err != nil {
+		return nil
+	}
+
+	bytes, err := os.ReadFile(repoFile)
+	if err != nil {
+		return err
+	}
+
+	data := string(bytes)
+	for _, b := range strings.Split(data, "---") {
+		entry := RepositoryEntry{
+			Info: &PackageInfo{
+				Name:            "",
+				Description:     "",
+				Version:         "",
+				Revision:        1,
+				Url:             "",
+				License:         "",
+				Arch:            "",
+				Type:            "",
+				Keep:            make([]string, 0),
+				Depends:         make([]string, 0),
+				MakeDepends:     make([]string, 0),
+				OptionalDepends: make([]string, 0),
+				Conflicts:       make([]string, 0),
+				Provides:        make([]string, 0),
+			},
+			Download: "",
+		}
+		err := yaml.Unmarshal([]byte(b), &entry)
+		if err != nil {
+			return err
+		}
+		repo.Entries[entry.Info.Name] = &entry
+	}
+	return nil
+}
+
+func (repo *Repository) SyncLocalDatabase() error {
+	repoFile := "/var/lib/bpm/repositories/" + repo.Name + ".bpmdb"
+	err := os.MkdirAll(path.Dir(repoFile), 0755)
+	if err != nil {
+		return err
+	}
+
+	u, err := url.JoinPath(repo.Source, "database.bpmdb")
+	if err != nil {
+		return err
+	}
+
+	resp, err := http.Get(u)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	out, err := os.Create(repoFile)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	_, err = io.Copy(out, resp.Body)
+
+	return nil
+}
+
+func GetRepository(name string) *Repository {
+	for _, repo := range BPMConfig.Repositories {
+		if repo.Name == name {
+			return repo
+		}
+	}
+	return nil
+}
+
+func GetRepositoryEntry(str string) (*RepositoryEntry, *Repository, error) {
+	split := strings.Split(str, "/")
+	if len(split) == 1 {
+		pkgName := strings.TrimSpace(split[0])
+		if pkgName == "" {
+			return nil, nil, errors.New("could not find repository entry for this package")
+		}
+		for _, repo := range BPMConfig.Repositories {
+			if repo.ContainsPackage(pkgName) {
+				return repo.Entries[pkgName], repo, nil
+			}
+		}
+		return nil, nil, errors.New("could not find repository entry for this package")
+	} else if len(split) == 2 {
+		repoName := strings.TrimSpace(split[0])
+		pkgName := strings.TrimSpace(split[1])
+		if repoName == "" || pkgName == "" {
+			return nil, nil, errors.New("could not find repository entry for this package")
+		}
+		repo := GetRepository(repoName)
+		if repo == nil || !repo.ContainsPackage(pkgName) {
+			return nil, nil, errors.New("could not find repository entry for this package")
+		}
+		return repo.Entries[pkgName], repo, nil
+	} else {
+		return nil, nil, errors.New("could not find repository entry for this package")
+	}
+}
+
+func (repo *Repository) FetchPackage(pkg string) (string, error) {
+	if !repo.ContainsPackage(pkg) {
+		return "", errors.New("could not fetch package '" + pkg + "'")
+	}
+	entry := repo.Entries[pkg]
+	URL, err := url.JoinPath(repo.Source, entry.Download)
+	if err != nil {
+		return "", err
+	}
+	resp, err := http.Get(URL)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	err = os.MkdirAll("/var/cache/bpm/packages/", 0755)
+	if err != nil {
+		return "", err
+	}
+	out, err := os.Create("/var/cache/bpm/packages/" + path.Base(entry.Download))
+	if err != nil {
+		return "", err
+	}
+	defer out.Close()
+
+	_, err = io.Copy(out, resp.Body)
+	return "/var/cache/bpm/packages/" + path.Base(entry.Download), nil
+}