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From 08e8768b07065b32e1aa9ccb3adae79a157bbfbc Mon Sep 17 00:00:00 2001
From: Lars Kellogg-Stedman <lars@oddbit.com>
Date: Tue, 13 Aug 2024 22:02:30 +0300
Subject: [PATCH] Add support for decompressing zstd rpm payloads
Recent (Fedora 32 and later) versions of Fedora have switched to
using zstd to compress rpm payloads.
https://bugs.debian.org/518348
--- a/Alien/Package/Rpm.pm
+++ b/Alien/Package/Rpm.pm
@@ -159,9 +159,19 @@ sub unpack {
$this->SUPER::unpack(@_);
my $workdir=$this->unpacked_tree;
- # Check if we need to use lzma to uncompress the cpio archive
+ # Check if we need to uncompress the cpio archive
my $decomp='';
- if ($this->do("rpm2cpio '".$this->filename."' | lzma -t -q > /dev/null 2>&1")) {
+ if ($this->do("rpm2cpio '".$this->filename."' | xz -t -q > /dev/null 2>&1")) {
+ # we first check xz (previously lzma) because this is the
+ # most common compression type at the moment.
+ $decomp = 'xz -d -q |';
+ } elsif ($this->do("rpm2cpio '".$this->filename."' | zstd -t -q > /dev/null 2>&1")) {
+ # we next check zstd, which is used by newer (Fedora 32 and later)
+ # rpms.
+ $decomp = 'zstd -d -q |';
+ } elsif ($this->do("rpm2cpio '".$this->filename."' | lzma -t -q > /dev/null 2>&1")) {
+ # We check lzma last in case we're on an older system with
+ # only lzma and no xz
$decomp = 'lzma -d -q |';
}
--
2.45.2
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