Bug#1001283: python3-nbconvert: nbconvert Depends: python3-mistune (<< 2)

[Drew Parsons]

Package: python3-nbconvert
Version: 6.1.0-1
Severity: serious
Justification: FTBFS
Control: affects -1 src:mistune

setup.py for nbconvert declares the requirement
'mistune>=0.8.1,<2'

The upper bound is not enforecd in the debian packaging.

In this case it actually matters. mistune 2.0.0 has just been
uploaded, and nbconvert fails against it,
e.g. debci
https://ci.debian.net/data/autopkgtest/testing/amd64/n/nbconvert/17364189/log.gz

or using sphinx to build docs
e.g. rebuilding nbconvert:

debian/rules override_dh_sphinxdoc
make[1]: Entering directory '/home/drew/projects/python/build/nbconvert-6.1.0'
PYTHONPATH=. python3 -m sphinx -b html docs/source debian/python-nbconvert-doc/usr/share/doc/python-nbconvert-doc/html
Running Sphinx v4.3.1

Configuration error:
There is a programmable error in your configuration file:

Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/sphinx/config.py", line 329, in eval_config_file
exec(code, namespace)
File "/projects/python/build/nbconvert-6.1.0/docs/source/conf.py", line 25, in <module>
exec(compile(f.read(), 'autogen_config.py', 'exec'), {})
File "autogen_config.py", line 11, in <module>
File "/projects/python/build/nbconvert-6.1.0/nbconvert/__init__.py", line 4, in <module>
from .exporters import *
File "/projects/python/build/nbconvert-6.1.0/nbconvert/exporters/__init__.py", line 3, in <module>
from .html import HTMLExporter
File "/projects/python/build/nbconvert-6.1.0/nbconvert/exporters/html.py", line 18, in <module>
from nbconvert.filters.highlight import Highlight2HTML
File "/projects/python/build/nbconvert-6.1.0/nbconvert/filters/__init__.py", line 6, in <module>
from .markdown import *
File "/projects/python/build/nbconvert-6.1.0/nbconvert/filters/markdown.py", line 13, in <module>
from .markdown_mistune import markdown2html_mistune
File "/projects/python/build/nbconvert-6.1.0/nbconvert/filters/markdown_mistune.py", line 31, in <module>
class MathBlockGrammar(mistune.BlockGrammar):
AttributeError: module 'mistune' has no attribute 'BlockGrammar'

make[1]: *** [debian/rules:26: override_dh_sphinxdoc] Error 2


So nbconvert FTBFS.
Marking Severity: serious for that reason.




-- System Information:
Debian Release: bookworm/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.15.0-2-amd64 (SMP w/8 CPU threads)
Kernel taint flags: TAINT_OOT_MODULE
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages python3-nbconvert depends on:
ii python3 3.9.8-1
ii python3-bleach 4.1.0-1
ii python3-defusedxml 0.7.1-1
ii python3-entrypoints 0.3-9
ii python3-jinja2 3.0.1-2
ii python3-jupyter-core 4.9.1-1
ii python3-jupyterlab-pygments 0.1.2-7
ii python3-mistune 2.0.0-1
ii python3-nbclient 0.5.6-2
ii python3-nbformat 5.1.3-1
ii python3-pandocfilters 1.5.0-1
ii python3-pygments 2.7.1+dfsg-2.1
ii python3-testpath 0.5.0+dfsg-1
ii python3-traitlets 5.1.1-1

Versions of packages python3-nbconvert recommends:
ii pandoc 2.9.2.1-1+b2
ii python3-jupyter-client 7.1.0-1

Versions of packages python3-nbconvert suggests:
pn python-nbconvert-doc <none>
ii texlive-fonts-recommended 2021.20211127-1
ii texlive-plain-generic 2021.20211127-1
ii texlive-xetex 2021.20211127-1

-- no debconf information