Firefox 21.0
 

I'm running slackware64-current with the latest package updates. This morning I tried to build Firefox 21.0 but run into a problem apparently due to the Python package.

checking Python environment is Mozilla virtualenv... Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/tmp/mozilla-release/python/mozbuild/mozbuild/base.py", line 15, in <module>
from mach.mixin.process import ProcessExecutionMixin
File "/tmp/mozilla-release/python/mach/mach/mixin/process.py", line 29, in <module>
raise Exception('Could not detect environment shell!')
Exception: Could not detect environment shell!
configure: error: Python environment does not appear to be sane.

Any ideas as to what might be causing the problem? Thanks in advance

You might proceed further by explicitly stating

export SHELL=/bin/bash

before starting the build. I am not sure... I just ran into the same problem, now it seems to build.

That was indeed the solution. Thank you very much. I've never had to do that previously.