> - mcbs has something broken in its imports;

mbcs is only available on Windows.

So, what do you prefer? Add a check for sys.platform, or just skip it?

> - tactis module is not present.

I'm not sure what happened here: either the alias entry is wrong
or the codec module was not committed.

In either case, no one has complained about this encoding not working,
so we can probably just remove it from the alias table. See
http://bugs.python.org/issue1251921 for a similar report and
discussion.

I don't have such autority, and probably such a choice will require a discussion on python-dev. So I'm +1 for just skipping it for now (with a XXX comment on the right maybe).