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[Bug 1004592] Re: Compiz fails to build ~ looks like finding python ver. doesn't work properly (Archlinux)
Hi. I've landed here because of LP: #1310794. In order to drop Python
2 from the Ubuntu touch image, we need to port all autopilot tests to
Python 3. One of the current blockers is unity7, which uses the python-
compizconfig package to access the Python level `compizconfig.Context`
This is problematic because the compiz Python bindings are provided by a
pyrex module, compizconfig.pyx. Pyrex itself is essentially dead
upstream, the last release happening in 2011 afaict. It also doesn't
support Python 3 afaict. So porting python-compizconfig to Python 3 is
going to be a major PITA. I don't even know if it's worth it, if say
unity7 is deprecated in 'U'.
Let's say it *is* worth it, there are a few options. The Python
bindings could be hand-coded, or we could use ctypes, but in both those
cases, the entire module would have to be ported. Are there enough
tests so that we know when we're done and have a high quality port?
The other option is to try to port just what's needed for unity7's
autopilot tests. That may be just as big a task though, depending on
how much of the compizconfig API the tests require.
As for Python 2/3 on Ubuntu, we would like Python 3 to be "the default"
in the sense that all system scripts and services written in Python
should be Python 3. However, we'll never change /usr/bin/python like
Arch did. As inherited from Debian, /usr/bin/python will *always* be
Python 2 (unless and until PEP 394 changes that recommendation, but
don't hold your breath). /usr/bin/python3 is what you need to use, but
as is pointed out, most distros will heed PEP 394 and provide a
/usr/bin/python2 symlink too. Ubuntu and Debian do.
Any guidance you can provide on helping us get enough of compizconfig
exposed to Python 3 would be very helpful.
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Compiz fails to build ~ looks like finding python ver. doesn't work
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