Re: [gentoo-python] Re: [PATCH 1/3] Make python-single-r1 stand-alone.

[Michał Górny]

On Wed, 28 Nov 2012 13:25:25 +0100
Dirkjan Ochtman <djc@g.o> wrote:

> Patches 1 and 2 look good to me. Patch 3 looks like it merits some
> higher-level design discussion?

Yes, that's why I sent it here.

Shortly saying, the issue is that some packages (like chromium) need
Python for build-time only but don't install anything related to it.

Giving user the choice of implementation is not really necessary /
relevant there. Therefore, the idea is to provide a minimalistic code
to handle it with least effort possible.

In the simple case, chromium does:

  PYTHON_COMPAT=( python{2_6,2_7} )
  inherit python-build-r1

  DEPEND=${PYTHON_DEPS}

  #pkg_setup() {
  #  python-build-r1_pkg_setup
  #  ...
  #}

and the build completes gracefully.

And the whole effort is necessary to make sure that the active Python
implementation is one supported by package. For example, the above
ebuild would use (or even might pull in) python2 if python3 is active.

-- 
Best regards,
Michał Górny