Hi! It seems this is a good part of what needs to be done:
diff --git a/Pristine/Tar/Delta/Tarball.pm b/Pristine/Tar/Delta/Tarball.pm
index 121b85e..e8b5ce0 100644
--- a/Pristine/Tar/Delta/Tarball.pm
+++ b/Pristine/Tar/Delta/Tarball.pm
@@ -26,7 +26,13 @@ sub write {
}
}
- doit("tar", "czf", $deltafile, "-C", $tempdir, keys %$delta);
+ doit("tar", "--sort=name",
+ "--mtime=\@0",
+ "--owner=0",
+ "--group=0",
+ "--numeric-owner",
+
"--pax-option=exthdr.name=%d/PaxHeaders/%f,delete=atime,delete=ctime",
+ "-czf", $deltafile, "-C", $tempdir, sort keys %$delta);
return $delta;
}
With this patch applied, invoking `GZIP=-n pristine-tar gendelta foo.tar.gz`
does almost do the right thing, except the "wrapper" file contained
within the delta file (tarball.) That "wrapper" is compressed with
pristine-tar's internal "zgz" tool and unfortunately still embeds a
timestamp into the "wrapper" file (with actually is a .gz, but just
generated with this `zgz` tool.)
MfG, JBG
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