On Mon, 5 Aug 2013 12:22:32 -0400 Alexis Ballier <aball...@gentoo.org> wrote: > On Mon, 5 Aug 2013 17:13:49 +0100 > Ciaran McCreesh <ciaran.mccre...@googlemail.com> wrote: > > On Tue, 06 Aug 2013 02:03:28 +1000 > > Michael Palimaka <kensing...@gentoo.org> wrote: > > > > How often does this situation even come up? If 9/10 times the > > > > libraries are set up as maintainers expect them to be, it is > > > > probably better to deal with the odd unnecessary rebuild until > > > > somebody spots it, rather than going without support for slot > > > > operator deps. > > > > > > With respect, "good enough" is not a very high standard to aim > > > for. In my opinion, adding unnecessary subslot dependencies is no > > > different to adding overly-wide dependencies. > > > > There's a world of difference between a horrible breakage and an > > occasional unnecessary compile. If users are concerned about how > > they spend their CPU time, they're using the wrong distribution. > > there is something wrong in the way its done if there are > 'occasional unnecessary compiles'
Not really. There's a tradeoff between dependencies that are occasionally too strict, and dependencies that are horribly complicated (see "subslot dictionaries"). Gentoo already favours lots of unnecessary recompiling over additional complexity. For example, for many revbumps, it would be possible to only rebuild a small part of the package and replace a few files rather than the whole thing. But writing ebuilds capable of doing so would involve more developer work, and would be more prone to screwups, so such a feature isn't offered. So all this fuss over "unnecessary compiles" is misplaced. Gentoo simply isn't the right distribution to use if minimising compile time is a goal. > 'horrible breakage' is mitigated by preserve-libs and running > @preserved-rebuild as soon as possible has the same end result > avoiding useless rebuilds. But preserve-libs introduces breakages and security holes. The point of slot operator dependencies is to replace that with a reliable feature that doesn't rely upon guesswork and voodoo. -- Ciaran McCreesh
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