Bug#571274: brltty: FTBFS with Python 2.6 as default version

[Jakub Wilk <jwilk@debian.org>]

* Samuel Thibault <sthibault@debian.org>, 2010-02-27, 14:17:
> > | $ find debian/tmp/ -type f -path '*python*'
> > | debian/tmp/usr/local/lib/python2.6/dist-packages/Brlapi-0.5.4.egg-info
> > | debian/tmp/usr/local/lib/python2.6/dist-packages/brlapi.so
>
> Err, looks like an issue with the setup and Extension packages. All
> brltty does is to run
>
> python setup.py --quiet install --skip-build --record installed-files --root the_install_root
>
> With python2.5, this installs in
>
> the_install_root/usr/lib/python2.5/site-packages/brlapi.so
>
> while with python2.6, this installs in
>
> the_install_root/usr/local/lib/python2.6/dist-packages/brlapi.so
>
> Is that an expected change of behavior in python2.6?

Yes, that's expected: 
http://lists.debian.org/debian-devel/2009/02/msg00431.html ("Local 
installation path").

> If have noticed that there is a --install-layout option to which we can
> pass deb instead of the new value unix.  Is that what has changed and
> that we should just use?

Yes. Note however, that this option is Debian-specific and not available 
in python releases prior to 2.5.4.

A more (back)portable way to handle this is to conditionally include 
/usr/share/python/python.mk and use $(py_setup_install_args).

--
Jakub Wilk

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