This is an automated email from the git hooks/post-receive script. guillem pushed a commit to branch main in repository dpkg.
View the commit online: https://git.dpkg.org/cgit/dpkg/dpkg.git/commit/?id=beb1cdbdf2f5333a85c86e120bb2abc145d07b21 commit beb1cdbdf2f5333a85c86e120bb2abc145d07b21 Author: Guillem Jover <[email protected]> AuthorDate: Mon Jan 2 23:31:09 2023 +0100 Dpkg::Compression: Pass --no-adjust to xz to force compression threaded mode If xz cannot meet the memory usage limit on multi-threaded mode, then it can end up falling back to single-threaded mode, which would then generate different output, making it non-reproducible. This has the drawback that it can then error out. --- scripts/Dpkg/Compression.pm | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/scripts/Dpkg/Compression.pm b/scripts/Dpkg/Compression.pm index 50a8d440c..6421e1d4e 100644 --- a/scripts/Dpkg/Compression.pm +++ b/scripts/Dpkg/Compression.pm @@ -366,6 +366,10 @@ sub compression_get_cmdline_compress { } my $threads = compression_get_threads(); if ($comp eq 'xz') { + # Do not let xz fallback to single-threaded mode, to avoid + # non-reproducible output. + push @prog, '--no-adjust'; + # The xz -T1 option selects a single-threaded mode which generates # different output than in multi-threaded mode. To avoid the # non-reproducible output we pass -T+1 (supported with xz >= 5.4.0) -- Dpkg.Org's dpkg
