[Python-modules-team] Bug#958852: texlive-base/extra breaks jupyter-sphinx-theme autopkgtest: Builder name pickle not registered or available through entry point

[Paul Gevers]

Source: texlive-base, jupyter-sphinx-theme, texlive-extra
Control: found -1 texlive-base/2020.20200417-1
Control: found -1 texlive-extra/2020.20200417-1
Control: found -1 jupyter-sphinx-theme/0.0.6+ds1-9
Severity: serious
Tags: sid bullseye
X-Debbugs-CC: debian-ci at lists.debian.org
User: debian-ci at lists.debian.org
Usertags: breaks needs-update

Dear maintainer(s),

With recent uploads of texlive-base and texlive-extra the autopkgtest of
jupyter-sphinx-theme fails in testing when that autopkgtest is run with
the binary packages of texlive-base and texlive-extra from unstable. It
passes when run with only packages from testing. In tabular form:

                       pass            fail
texlive-base           from testing    2020.20200417-1
texlive-extra          from testing    2020.20200417-1
jupyter-sphinx-theme   from testing    0.0.6+ds1-9
versioned deps [0]     from testing    from unstable
all others             from testing    from testing

I copied some of the output at the bottom of this report.

Currently this regression is blocking the migration of texlive-base and
texlive-extra to testing [1]. Due to the nature of this issue, I filed
this bug report against all three packages. Can you please investigate
the situation and reassign the bug to the right package?

More information about this bug and the reason for filing it can be found on
https://wiki.debian.org/ContinuousIntegration/RegressionEmailInformation

Paul

[0] You can see what packages were added from the second line of the log
file quoted below. The migration software adds source package from
unstable to the list if they are needed to install packages from
texlive-base/2020.20200417-1. I.e. due to versioned dependencies or
breaks/conflicts.
[1] https://qa.debian.org/excuses.php?package=texlive-base

https://ci.debian.net/data/autopkgtest/testing/amd64/j/jupyter-sphinx-theme/5144210/log.gz

***************** pickle *****************
make -C demo pickle BUILDDIR=build/build-pickle
make[1]: Entering directory
'/tmp/autopkgtest-lxc.c4x56q58/downtmp/autopkgtest_tmp/examples/demo'
sphinx-build -b pickle -d build/build-pickle/doctrees   source
build/build-pickle/pickle
Running Sphinx v2.4.3

Sphinx error:
Builder name pickle not registered or available through entry point
make[1]: *** [Makefile:64: pickle] Error 2
make[1]: Leaving directory
'/tmp/autopkgtest-lxc.c4x56q58/downtmp/autopkgtest_tmp/examples/demo'
make: *** [Makefile:51: build-demo] Error 2
autopkgtest [19:21:54]: test perform-demo: -----------------------]

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