Description:

Diffuse, and most likely other python-based software does not play well with anaconda. If a anaconda is installed with a python2 environment that does not contain pygtk, diffuse crashes with the following error:

Traceback (most recent call last):
File "/usr/bin/diffuse", line 124, in <module>
import pygtk
ImportError: No module named pygtk


Additional info:
* diffuse 0.4.8-1

Steps to reproduce:

[run] pacman -S diffuse
[install anaconda or miniconda from AUR, from continuum.io]
[run] conda create -n test python=2
[run] source activate test
[run] diffuse
[error occurs]

Two solutions seem to work:

1) Install pygtk and all other dependencies in all conda environments. This is not desirable since it partially defeats the purpose of anaconda and may become cumbersome for many environments/many software packages besides diffuse.
2) Change the shebang in /usr/bin/diffuse from "#!/usr/bin/env python2" to "#!/usr/bin/python2". This seems to work since python2 is a dependency and the anaconda path setting does not affect the python setup this way.