Bug#889502: cypari2: FTBFS on several architectures

[Andreas Beckmann]

Source: cypari2
Version: 1.1.3-3
Severity: serious
Justification: fails to build from source (but built successfully in the past)

Hi,

cypari2/experimental FTBFS on several architectures:
https://buildd.debian.org/status/package.php?p=cypari2&suite=experimental

I can reproduce this in pbuilder on i386, but not on amd64 (where it
also built successfully on the buildd).

Excerpt from
https://buildd.debian.org/status/fetch.php?pkg=cypari2&arch=i386&ver=1.1.3-3&stamp=1516945955&raw=0

make[2]: Entering directory '/<<PKGBUILDDIR>>/docs'
Running Sphinx v1.6.6
making output directory...
loading pickled environment... not yet created
building [mo]: targets for 0 po files that are out of date
building [html]: targets for 6 source files that are out of date
updating environment: 6 added, 0 changed, 0 removed
reading sources... [ 16%] closure
reading sources... [ 33%] convert
reading sources... [ 50%] gen
reading sources... [ 66%] handle_error
reading sources... [ 83%] index
reading sources... [100%] pari_instance

/<<PKGBUILDDIR>>/docs/source/closure.rst:1: WARNING: autodoc: failed to import module u'cypari2.closure'; the following exception was raised:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/sphinx/ext/autodoc.py", line 658, in import_object
    __import__(self.modname)
ImportError: No module named cypari2.closure
/<<PKGBUILDDIR>>/docs/source/convert.rst:1: WARNING: autodoc: failed to import module u'cypari2.convert'; the following exception was raised:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/sphinx/ext/autodoc.py", line 658, in import_object
    __import__(self.modname)
ImportError: No module named cypari2.convert
/<<PKGBUILDDIR>>/docs/source/gen.rst:1: WARNING: autodoc: failed to import module u'cypari2.gen'; the following exception was raised:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/sphinx/ext/autodoc.py", line 658, in import_object
    __import__(self.modname)
ImportError: No module named cypari2.gen
/<<PKGBUILDDIR>>/docs/source/handle_error.rst:1: WARNING: autodoc: failed to import module u'cypari2.handle_error'; the following exception was raised:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/sphinx/ext/autodoc.py", line 658, in import_object
    __import__(self.modname)
ImportError: No module named cypari2.handle_error
/<<PKGBUILDDIR>>/docs/source/pari_instance.rst:1: WARNING: autodoc: failed to import module u'cypari2.pari_instance'; the following exception was raised:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/sphinx/ext/autodoc.py", line 658, in import_object
    __import__(self.modname)
ImportError: No module named cypari2.pari_instance
looking for now-outdated files... none found
pickling environment... done
checking consistency... done
preparing documents... done


Andreas