Switch to new download format and add maintainers field

pkg.info

@@ -1,10 +1,24 @@
 name: gzip
 description: GNU compression utility
-version: 1.14
+version: "1.14"
+revision: 2
 url: https://www.gnu.org/software/gzip/
 license: GPL3-or-later
+maintainers:
+  - [email protected]
 architecture: any
-depends: ["glibc"]
-optional_depends: ["diffutils","less","util-linux"]
-make_depends: ["less","perl"]
 type: source
+depends:
+  - glibc
+optional_depends:
+  - diffutils
+  - less
+  - util-linux
+make_depends:
+  - less
+  - perl
+downloads:
+  - url: https://ftpmirror.gnu.org/gnu/gzip/gzip-${BPM_PKG_VERSION}.tar.xz
+    extract_to: ${BPM_SOURCE}
+    extract_strip_components: 1
+    checksum: 01a7b881bd220bfdf615f97b8718f80bdfd3f6add385b993dcf6efd14e8c0ac6

source.sh

@@ -2,16 +2,6 @@
 # BPM Expects the source code to be extracted into the automatically created 'source' directory which can be accessed using $BPM_SOURCE
 # BPM Expects the output files to be present in the automatically created 'output' directory which can be accessed using $BPM_OUTPUT
 
-DOWNLOAD="https://ftpmirror.gnu.org/gnu/gzip/gzip-${BPM_PKG_VERSION}.tar.xz"
-FILENAME="${DOWNLOAD##*/}"
-
-# The prepare function is executed in the root of the temp directory
-# This function is used for downloading files and putting them into the correct location
-prepare() {
-  wget "$DOWNLOAD"
-  tar -xvf "$FILENAME" --strip-components=1 -C "$BPM_SOURCE"
-}
-
 # The build function is executed in the source directory
 # This function is used to compile the source code
 build() {