[Bug 1411435] Re: installing: TypeError: Can't convert 'NoneType' object to str implicitly

[Sumana Harihareswara]

Was able to troubleshoot this a little. This problem happens when
Mailman cannot find a config file. And so the execv function is
expecting a string (the filename) and can't deal with the None.

When I ran "mailman info" I initially got "config file: None" but then
on later tries the line said "config file:
/home/sumanah/repos/mailman/src/mailman/var/etc/mailman.cfg". It seems
that running "mailman info" can make the config file for me.

Just now I tried running "mailman info" and then "mailman start" in a
virtualenv in which Python 3 was the default Python, and that seemed to
help a lot.

mkdir venv
virtualenv -p python3 venv/
source venv/bin/activate
cd repos/mailman
python setup.py install
mailman start # got the TypeError I mentioned in my initial bug report
mailman info # told me that   config file: /home/sumanah/repos/mailman/var/etc/mailman.cfg
mailman start # this time it worked! 


Much thanks to Leonard Richardson for assiduous assistance.

** Summary changed:

- installing: TypeError: Can't convert 'NoneType' object to str implicitly
+ after initial install, master runner crashes when config file is missing

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https://bugs.launchpad.net/bugs/1411435

Title:
  after initial install, master runner crashes when config file is
  missing

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