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#! @perl@ -w -I@libexecdir@/nix
use strict;
use File::Temp qw(tempdir);
use NixManifest;
use GeneratePatches;
if (scalar @ARGV != 5) {
print STDERR <<EOF;
Usage: nix-generate-patches NAR-DIR PATCH-DIR PATCH-URI OLD-MANIFEST NEW-MANIFEST
This command generates binary patches between NAR files listed in
OLD-MANIFEST and NEW-MANIFEST. The patches are written to the
directory PATCH-DIR, and the prefix PATCH-URI is used to generate URIs
for the patches. The patches are added to NEW-MANIFEST. All NARs are
required to exist in NAR-DIR. Patches are generated between
succeeding versions of packages with the same name.
EOF
exit 1;
}
my $narPath = $ARGV[0];
my $patchesPath = $ARGV[1];
my $patchesURL = $ARGV[2];
my $srcManifest = $ARGV[3];
my $dstManifest = $ARGV[4];
my (%srcNarFiles, %srcLocalPaths, %srcPatches);
readManifest $srcManifest, \%srcNarFiles, \%srcPatches;
my (%dstNarFiles, %dstLocalPaths, %dstPatches);
readManifest $dstManifest, \%dstNarFiles, \%dstPatches;
my $tmpDir = tempdir("nix-generate-patches.XXXXXX", CLEANUP => 1, TMPDIR => 1)
or die "cannot create a temporary directory";
generatePatches \%srcNarFiles, \%dstNarFiles, \%srcPatches, \%dstPatches,
$narPath, $patchesPath, $patchesURL, $tmpDir;
propagatePatches \%srcPatches, \%dstNarFiles, \%dstPatches;
writeManifest $dstManifest, \%dstNarFiles, \%dstPatches;
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