On Tue, May 19, 2020 at 3:25 AM Robin Hansson <robinh...@gmail.com> wrote: > > Hello Ubuntu Developers, > > I wonder what the meaning is of of the package naming like ghc > 8.8.1+dfsg1+is+8.6.5+dfsg1-3 > When running "ghc --version" it says "version 8.6.5". Does the initial > "8.8.1" mean some stuff from 8.8.1 is back-ported? What about "dfsg1" and > "dfsg1-3" > ?
Hi Robin, multiple questions in one :-) - most of the time +is or +really indicate a problem that forced the people to go back e.g. they went to 8.8.1, but later found a big issue So they had to go back to 8.6.5 but since upgrades only work with increasing values a version string like the one you see is constructed. See https://www.debian.org/doc/debian-policy/ch-controlfields.html#epochs-should-be-used-sparingly - dfsg -> removing file forbidden by policy See https://wiki.debian.org/DebianMentorsFaq#What_does_.2BIBw-dfsg.2BIB0_or_.2BIBw-ds.2BIB0_in_the_version_string_mean.3F In general if in doubt, check the changelog of the package which is accessible in your case with: $ apt changelog ghc There you will for this example find: * 8.8.1+dfsg1-1~exp4 was mistakenly targeted to unstable. - use 8.6.5 repacked tarball to fix the issue I hope that helps, Christian > Best, > Robin > -- > Ubuntu-devel-discuss mailing list > Ubuntu-devel-discuss@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss -- Christian Ehrhardt Staff Engineer, Ubuntu Server Canonical Ltd -- Ubuntu-devel-discuss mailing list Ubuntu-devel-discuss@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss
