[Pkg-matrix-maintainers] Bug#1002380: python-matrix-nio: FTBFS: AttributeError: module 'mistune' has no attribute 'BlockGrammar'

[Lucas Nussbaum]

Source: python-matrix-nio
Version: 0.18.7-1
Severity: serious
Justification: FTBFS
Tags: bookworm sid ftbfs
User: lucas at debian.org
Usertags: ftbfs-20211220 ftbfs-bookworm

Hi,

During a rebuild of all packages in sid, your package failed to build
on amd64.


Relevant part (hopefully):
> make[1]: Entering directory '/<<PKGBUILDDIR>>'
> sphinx-build \
> 	-b html doc debian/python3-matrix-nio-doc/usr/share/doc/python3-matrix-nio-doc/html
> Running Sphinx v4.3.2
> 
> Exception occurred:
>   File "/usr/lib/python3/dist-packages/m2r.py", line 59, in <module>
>     class RestBlockGrammar(mistune.BlockGrammar):
> AttributeError: module 'mistune' has no attribute 'BlockGrammar'
> The full traceback has been saved in /tmp/sphinx-err-esrb43rj.log, if you want to report the issue to the developers.
> Please also report this if it was a user error, so that a better error message can be provided next time.
> A bug report can be filed in the tracker at <https://github.com/sphinx-doc/sphinx/issues>. Thanks!
> make[1]: *** [debian/rules:19: execute_before_dh_sphinxdoc] Error 2


The full build log is available from:
http://qa-logs.debian.net/2021/12/20/python-matrix-nio_0.18.7-1_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

If you reassign this bug to another package, please marking it as 'affects'-ing
this package. See https://www.debian.org/Bugs/server-control#affects

If you fail to reproduce this, please provide a build log and diff it with mine
so that we can identify if something relevant changed in the meantime.