Gentoo Archives: gentoo-dev

From: Rich Freeman <rich0@g.o>
To: gentoo-dev <gentoo-dev@l.g.o>
Subject: Re: [gentoo-dev] Why adding python3_8 to Gentoo sucks?
Date: Fri, 15 Nov 2019 14:18:41
In Reply to: Re: [gentoo-dev] Why adding python3_8 to Gentoo sucks? by "Michał Górny"
1 On Fri, Nov 15, 2019 at 3:05 AM Michał Górny <mgorny@g.o> wrote:
2 >
3 > On Wed, 2019-11-13 at 22:16 +0100, Michał Górny wrote:
4 > > I'd like to share my frustration at the state of Python in general,
5 > > and Python packages in Gentoo. So I'd like to 'bootstrap' python3_8 --
6 > > that is, add it to the most common dependency, dev-python/setuptools.
7 > > Simple thing, right?
8 > >
9 >
10 > So I went with plan B instead: I'll do as much testing locally
11 > as possible, and add py3.8 when I manage to get the tests on the package
12 > in question working, independently of the testing of all deep test deps.
13 > This will mean that some packages will have tests disabled temporarily
14 > for end users.
15 >
17 Perhaps an overlay would be simpler just so that you can generally
18 avoid worrying about QA until you're tidying up, but otherwise this
19 seems like it could be done in-tree by just masking the use flag so
20 that only those willing to test/contribute run into issues.
22 You've described a number of issues and my sense is that many are just
23 inherent to python itself (the complex dep graph/etc - unless we want
24 a monolithic package). Some of course go to Gentoo practices, some of
25 which cause pain outside of python.
27 In particular it seems like many still don't understand when
28 revbumping is necessary. I'd have to dig up the wording of the actual
29 decision but as I recall when the Council made the decision they
30 wanted to leave a bit of room for maintainer discretion, trusting that
31 maintainers would use it properly. An alternative proposal was to
32 just make a strict rule that would have erred on the side of QA, at
33 the cost of extra rebuilds for users (but at least consistent ones
34 that didn't break package managers). Obviously developers can't
35 exercise proper discretion if they don't fully understand the impacts.
36 If in doubt a revbump should always be safe, just at the cost of some
37 rebuilds (which are probably cheap for python packages).
39 --
40 Rich