[Python-modules-team] Bug#802108: purl: FTBFS: ImportError: No module named 'six'

[Chris West (Faux)]

Source: purl
Version: 1.1-1
Severity: serious
Justification: fails to build from source
Tags: sid stretch
User: reproducible-builds at lists.alioth.debian.org
Usertags: ftbfs
X-Debbugs-CC: reproducible-builds at lists.alioth.debian.org

Dear Maintainer,

The package fails to build:

I: pybuild base:170: cd /purl-1.1/.pybuild/pythonX.Y_2.7/build; python2.7 -m unittest discover -v 

----------------------------------------------------------------------
Ran 0 tests in 0.000s

OK
I: pybuild base:170: cd /purl-1.1/.pybuild/pythonX.Y_3.5/build; python3.5 -m unittest discover -v 
purl (unittest.loader._FailedTest) ... ERROR

======================================================================
ERROR: purl (unittest.loader._FailedTest)
----------------------------------------------------------------------
ImportError: Failed to import test module: purl
Traceback (most recent call last):
  File "/usr/lib/python3.5/unittest/loader.py", line 462, in _find_test_path
    package = self._get_module_from_name(name)
  File "/usr/lib/python3.5/unittest/loader.py", line 369, in _get_module_from_name
    __import__(name)
  File "/purl-1.1/.pybuild/pythonX.Y_3.5/build/purl/__init__.py", line 1, in <module>
    from .url import URL  # noqa
  File "/purl-1.1/.pybuild/pythonX.Y_3.5/build/purl/url.py", line 10, in <module>
    import six
ImportError: No module named 'six'


----------------------------------------------------------------------
Ran 1 test in 0.000s

FAILED (errors=1)

Full build log:
https://reproducible.debian.net/rb-pkg/unstable/amd64/purl.html

-- System Information:
Debian Release: stretch/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)