Hi, Guillem Jover <guillem@debian.org> (2016-07-06): > I'd like consider switching dpkg-deb --uniform-compression by default, > so that both control.tar and data.tar members use the same > compression, which currently would be xz (or gzip with -Zgzip). (AFAICT 'none' is still supported, contrary to 'bzip2' and 'lzma'). That wouldn't seem crazy to me. > This would give us more uniform and smaller packages. I think the d-i > people wanted something like this (?). [ Adding debian-boot@, where “the d-i people” are, and debian-cd@ for completeness. ] A few years ago we pushed for xz compression in some key packages to try and squeeze more packages into installation images, notably CD#1; ISTR that would only change the data part and not the control one, which would limit the size gain for some specific packages. debian-cd only generates netinst CDs nowadays so that's no longer a hot topic for us AFAIK. > Not all .deb parsers support control.tar.xz yet, but most do: > <https://wiki.debian.org/Teams/Dpkg/DebSupport> udpkg's status there seems correct (supports gz/xz/no compression), and just to be sure: I've just checked that compression_type is indeed handled independently for control (in udpkg.c's dpkg_unpackcontrol) and for data (dpkg_dounpack). > Would there be any objections to this? Bottom-line from a d-i point of view: having both compression in sync by default shouldn't change anything on our side (shouldn't gain us much but shouldn't do much harm either). KiBi.
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