Bug 562328 – dev-python/pyflakes: Should install executable for every python version

• Product: Gentoo Linux
• Status: RESOLVED CANTFIX

[Description Priit Laes (IRC: plaes) 2015-10-05 15:00:26 UTC]

Currently pyflakes installs only single executable which seems to only use version based on system default python.

For example, when my default system python is 2.7, /usr/bin/pyflakes points to 2.7 versin and when trying to run against python3 only files, it shows errors for python3-specific behaviour.

It would be nice to have pyflakes-2.7, pyflakes-3.3 and etc binaries too.

[Comment 1 Ian Delaney (RETIRED) 2015-10-09 08:07:20 UTC]

something is very wrong there

 $ ls -ld  /mnt/gen2/TmpDir/portage/dev-python/pyflakes-0.9.2/image/usr/bin/pyflakes
lrwxrwxrwx 1 testuser testuser 31 Oct  9 16:05 /mnt/gen2/TmpDir/portage/dev-python/pyflakes-0.9.2/image/usr/bin/pyflakes -> ../lib/python-exec/python-exec2

which adapts to whichever system python.
Can someone replicate this?

[Comment 2 Justin Lecher (RETIRED) 2015-10-10 14:55:55 UTC]

(In reply to Ian Delaney from comment #1)
> something is very wrong there
> 

What exactly is wrong here?

[Comment 3 Justin Lecher (RETIRED) 2015-10-10 15:04:33 UTC]

(In reply to Priit Laes (IRC: plaes) from comment #0)
> Currently pyflakes installs only single executable which seems to only use
> version based on system default python.
> 
> For example, when my default system python is 2.7, /usr/bin/pyflakes points
> to 2.7 versin and when trying to run against python3 only files, it shows
> errors for python3-specific behaviour.
> 
> It would be nice to have pyflakes-2.7, pyflakes-3.3 and etc binaries too.

Sadly we cannot do this. This should be something upstream needs to implement, like

pyflakes --python3.4 foo-3.py

As a workaround you can do

alias pyflakes2="EPYTHON=python2.7 pyflakes"