[gentoo-dev] python versioned libraries or not

[heroxbd@gentoo.org]

Dear all,

I have only one python-2.7 on my system. Simple and stupid.

After boost ebuild is converted to python-r1, libboost_python.so is
renamed to libboost_python-2.7.so. This is all cool about python-r1 for
multiple python implementation support.

At the same time, I don't need this feature. I have a couple of
Jamroot's which append "-lboost_python" to LDFLAGS, and I have to
manually specify "-lboost_python-2.7". Moreover, libraries depending on
boost.python, e.g. Boost.NumPy[1], searches for boost_python and
boost_python-mt only. I am forced to patch the build system to pass
"-${PYVAR}" to it, which is tedious.

I am looking for a way out. Candidates are,

    1. scan all python versioned libraries and symlink them to
       unversioned one. Question: hints to do it systematically in
       portage? Is there a helper available like python-exec?

    2. python-single-r1 is ready for use, but it requires manipulating
       the boost ebuild to change from python-r1, if I want a
       python-single-r1 blessed boost. Question: How about merging
       python-single-r1 with python-r1 and controlling by a global USE
       flag "python-single". When "python-single" is set, all ebuilds
       inheriting python-r1 behaves as if being with python-single-r1,
       so that all python versionings on executables and libraries are
       disabled.

    3. or something I missed

Comments?

Benda

1. https://github.com/ndarray/Boost.NumPy