[gentoo-dev] Re: useflag policies

[Sergey Popov]

<qa team lead hat>

In short - apropriate REQUIRED_USE with setting recommended
USE-flag(e.g. USE="+qt4 qt5" or USE="qt4 +qt5")

</qa team lead hat>

That's most painless decision for both developers and users. Developers
do not need to maintain ugly dependencies like

DEPEND="qt4 ? (
qt5 ( dev-qt/qtcore:5 )
!qt5 ( dev-qt/qtcore:4 )
)
...
"
and other mess.

</qa team lead hat>

Users will have default behaviour for empty make.conf. If they adjust
they make.conf to globally include/exclude some Qt-related USEs - they
are already moving from default and that's why - they can add apropriate
options to package.use


02.08.2015 19:34, Ben de Groot пишет:
> Recently some team members of the Qt project have adopted these ebuild
> policies: https://wiki.gentoo.org/wiki/Project:Qt/Policies
>
> I have an issue with the policy adopted under "Requires one of two Qt
> versions". In my opinion, in the case where a package offers a choice
> between qt4 or qt5, we should express this in explicit useflags and a
> REQUIRED_USE="^^ ( qt4 qt5 )". This offers the user the clearest choice.
>
> Other developers state that users are not interested in such
> implementation details, or that forced choice through REQUIRED_USE is
> too much of a hassle. This results in current ebuilds such as quassel to
> not make it clear that qt4 is an option.
>
> This goes against the principle of least surprise, as well as against QA
> recommendations. I would like to hear specifically from QA about how we
> should proceed, but comments from the wider developer community are also
> welcome.
>
> --
> Cheers,
>
> Ben | yngwin
> Gentoo developer
>


-- 
Best regards, Sergey Popov
Gentoo developer
Gentoo Desktop-effects project lead
Gentoo Quality Assurance project lead
Gentoo Proxy maintainers project lead