Switch to new download format and add maintainers field

pkg.info

@@ -1,9 +1,21 @@
 name: zstd
 description: Zstandard is a fast compression algorithm, providing high compression ratios
 version: 1.5.7
-revision: 2
+revision: 3
 url: https://facebook.github.io/zstd/
 license: BSD3-Clause,GPL2-only
+maintainers:
+  - [email protected]
 architecture: any
-depends: ["gcc-libs", "glibc", "lz4", "xz-utils", "zlib"]
 type: source
+depends:
+  - gcc-libs
+  - glibc
+  - lz4
+  - xz-utils
+  - zlib
+downloads:
+  - url: https://github.com/facebook/zstd/releases/download/v${BPM_PKG_VERSION}/zstd-${BPM_PKG_VERSION}.tar.gz
+    extract_to: ${BPM_SOURCE}
+    extract_strip_components: 1
+    checksum: eb33e51f49a15e023950cd7825ca74a4a2b43db8354825ac24fc1b7ee09e6fa3

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://github.com/facebook/zstd/releases/download/v${BPM_PKG_VERSION}/zstd-${BPM_PKG_VERSION}.tar.gz"
-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() {