In issue2551184 the 4th mega patch included updates for roundup_gettext.py
to extract text from detectors and extensions. It used to only get translations from
templates.

This patch requires a vendored pygettext.py which is mostly abandoned although
some interest was expressed:

 https://discuss.python.org/t/modernize-and-add-missing-features-to-pygettext/26455

It also requires that polib (https://polib.readthedocs.io) be installed to merge
the po files generated from the html template files and detector/extensions (msg7469).

Not sure we want to require that.

Ralf thoughts?


I'll upload the patch I currently synthesized out of the mega patch.