Chow Loong Jin wrote: > > Good question. Not sure if pristine-tar supports xz already at all. > > I thought it did, but upon closer inspection, it looks like pristine-tar has > been generating deltas for banshee's xz tarballs from ftp.gnome.org larger > than > the original tarballs themselves.
A bug which I've fixed. If a significant number of xz files turn out to be produced by pxz, pristine-tar can certainly use it. (AFAIK, a parallelized compressor will always produce different output than a non-parallel one, since it compresses blocks independently.) So far, out of the 200 or so .orig.tar.xz files in Debian, I am only able to reproduce around 50% with my currently not very good pristine-xz implementation. Anyway, I mostly wanted to say that it's a fallacy to worry that adding a novel compressor to Debian will cause problems for pristine-tar. If you're creating a tarball and want to use pristine-tar on it, you should steer clear of things it doesn't support, but most upstreams probably don't know or care about pristine-tar. -- see shy jo
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