Bug#921120: sagemath breaks sagetex autopkgtest: ImportError: No module named _tkinter, please install the python-tk package

[Tobias Hansen]

I guess the solution is to add python-tk to Depends: in the sagetex autopkgtest control file.

Best,
Tobias

On 2/1/19 8:27 PM, Tobias Hansen wrote:
> Hi,
>
> the problem is that python-matplotlib needs python-tk (it's the default backend), but only recommends it rather than depending on it. autopkgtests apparently don't install recommends. I already filed this as #921108 but the matplotlib2 maintainer does not want to change it.
>
> sagemath 8.6-3 had a dependency on python-tk but it really has nothing to do with python-tk.
>
> Best,
> Tobias
>
> On 2/1/19 7:48 PM, Paul Gevers wrote:
>> Source: sagemath, sagetex
>> Control: found -1 sagemath/8.6-4
>> Control: found -1 sagetex/3.2+ds-1
>> Control: affects -1 src:texlive-base
>> Severity: important
>> User: debian-ci at lists.debian.org
>> Usertags: breaks needs-update
>>
>> [X-Debbugs-CC: debian-ci at lists.debian.org, texlive-base at packages.debian.org]
>>
>> Dear maintainers,
>>
>> With a recent upload of sagemath the autopkgtest of sagetex fails in
>> testing when that autopkgtest is run with the binary packages of
>> sagemath from unstable. It passes when run with only packages from
>> testing. In tabular form:
>>                        pass            fail
>> sagemath               from testing    8.6-4
>> sagetex                from testing    3.2+ds-1
>> 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. It seems to me
>> that sagemath should not have dropped the dependency on python-tk.
>> However, it is possible that the issue is in six, or that sagetext now
>> should add it to the (test) dependencies.
>>
>> Currently this regression is blocking the migration of sagemath (and
>> texlive-base) to testing [1]. Due to the nature of this issue, I filed
>> this bug report against both packages. Can you please investigate the
>> situation and reassign the bug to the right package? If needed, please
>> change the bug's severity. FYI, also in unstable, the test fails.
>>
>> 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
>> sagemath/8.6-4. I.e. due to versioned dependencies or breaks/conflicts.
>> [1] https://qa.debian.org/excuses.php?package=sagemath
>>
>> https://ci.debian.net/data/autopkgtest/testing/amd64/s/sagetex/1821254/log.gz
>> autopkgtest [04:29:31]: test compose-examples: [-----------------------
>> rm -f *.aux *.out *.log
>> rm -f *.sagetex.s* *.sobj *-tikz*.table
>> rm -f -r sage-plots-for-*.tex
>> rm -f example_doctest.sage
>> rm -f example.pdf
>> pdflatex -interaction batchmode example.tex
>> This is pdfTeX, Version 3.14159265-2.6-1.40.19 (TeX Live
>> 2019/dev/Debian) (preloaded format=pdflatex)
>>  restricted \write18 enabled.
>> entering extended mode
>> sage example.sagetex.sage
>> Setting permissions of DOT_SAGE directory so only you can read and write it.
>> Processing Sage code for example.tex...
>> Inline formula 0 (line 35)
>> Inline formula 1 (line 36)
>> Inline formula 2 (line 38)
>> Inline formula 3 (line 39)
>> Code block (line 42) begin...end
>> Inline formula 4 (line 49)
>> Inline formula 5 (line 51)
>> Inline formula 6 (line 54)
>> Code block (line 58) begin...end
>> Inline formula 7 (line 63)
>> Inline formula 8 (line 64)
>> Code block (line 68) begin...end
>> Inline formula 9 (line 77)
>> Inline formula 10 (line 78)
>> Code block (line 81) begin...end
>> Inline formula 11 (line 85)
>> Code block (line 87) begin...Traceback (most recent call last):
>>   File "example.sagetex.sage.py", line 121, in <module>
>>     _st_.plot(_sage_const_0 , format='notprovided',
>> _p_=E.plot(-_sage_const_3 ,_sage_const_3 ))
>>   File "/usr/lib/python2.7/dist-packages/sagetex.py", line 239, in plot
>>     _p_.save(filename=plotfilename, **kwargs)
>>   File "/usr/lib/python2.7/dist-packages/sage/misc/decorators.py", line
>> 411, in wrapper
>>     return func(*args, **kwds)
>>   File "/usr/lib/python2.7/dist-packages/sage/plot/graphics.py", line
>> 3167, in save
>>     figure = self.matplotlib(**options)
>>   File "/usr/lib/python2.7/dist-packages/sage/plot/graphics.py", line
>> 2543, in matplotlib
>>     import matplotlib.pyplot as plt
>>   File "/usr/lib/python2.7/dist-packages/matplotlib/pyplot.py", line
>> 115, in <module>
>>     _backend_mod, new_figure_manager, draw_if_interactive, _show =
>> pylab_setup()
>>   File
>> "/usr/lib/python2.7/dist-packages/matplotlib/backends/__init__.py", line
>> 62, in pylab_setup
>>     [backend_name], 0)
>>   File
>> "/usr/lib/python2.7/dist-packages/matplotlib/backends/backend_tkagg.py",
>> line 4, in <module>
>>     from . import tkagg  # Paint image to Tk photo blitter extension.
>>   File "/usr/lib/python2.7/dist-packages/matplotlib/backends/tkagg.py",
>> line 5, in <module>
>>     from six.moves import tkinter as Tk
>>   File "/usr/lib/python2.7/dist-packages/six.py", line 203, in load_module
>>     mod = mod._resolve()
>>   File "/usr/lib/python2.7/dist-packages/six.py", line 115, in _resolve
>>     return _import_module(self.mod)
>>   File "/usr/lib/python2.7/dist-packages/six.py", line 82, in _import_module
>>     __import__(name)
>>   File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 42, in <module>
>>     raise ImportError, str(msg) + ', please install the python-tk package'
>> ImportError: No module named _tkinter, please install the python-tk package
>> end
>> Inline formula 12 (line 91)
>> Initializing plots directory
>> Plot 0 (line 97)
>>
>> **** Error in Sage code on line 97 of example.tex! Traceback follows.
>>
>> **** Running Sage on example.sage failed! Fix example.tex and try again.
>> make: *** [Makefile:52: example.pdf] Error 1
>> autopkgtest [04:29:35]: test compose-examples: -----------------------]
>>
>