[Python-modules-team] Bug#882772: python-xlib FTBFS: distutils.errors.DistutilsError: Could not find suitable distribution for Requirement.parse('setuptools-scm')

[Adrian Bunk]

Source: python-xlib
Version: 0.20-1
Severity: serious

https://buildd.debian.org/status/fetch.php?pkg=python-xlib&arch=all&ver=0.20-1&stamp=1511700406&raw=0

...
dh_auto_clean
I: pybuild base:184: python2.7 setup.py clean 

Note: Bypassing https://pypi.python.org/simple/setuptools-scm/ (disallowed host; see http://bit.ly/1dg9ijs for details).

Couldn't find index page for 'setuptools-scm' (maybe misspelled?)

Note: Bypassing https://pypi.python.org/simple/ (disallowed host; see http://bit.ly/1dg9ijs for details).

No local packages or working download links found for setuptools-scm
Traceback (most recent call last):
  File "setup.py", line 47, in <module>
    'Topic :: Software Development :: User Interfaces',
  File "/usr/lib/python2.7/dist-packages/setuptools/__init__.py", line 128, in setup
    _install_setup_requires(attrs)
  File "/usr/lib/python2.7/dist-packages/setuptools/__init__.py", line 123, in _install_setup_requires
    dist.fetch_build_eggs(dist.setup_requires)
  File "/usr/lib/python2.7/dist-packages/setuptools/dist.py", line 453, in fetch_build_eggs
    replace_conflicting=True,
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 866, in resolve
    replace_conflicting=replace_conflicting
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 1146, in best_match
    return self.obtain(req, installer)
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 1158, in obtain
    return installer(requirement)
  File "/usr/lib/python2.7/dist-packages/setuptools/dist.py", line 520, in fetch_build_egg
    return cmd.easy_install(req)
  File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 691, in easy_install
    raise DistutilsError(msg)
distutils.errors.DistutilsError: Could not find suitable distribution for Requirement.parse('setuptools-scm')
E: pybuild pybuild:283: clean: plugin distutils failed with: exit code=1: python2.7 setup.py clean 
dh_auto_clean: pybuild --clean -i python{version} -p 2.7 returned exit code 13
debian/rules:17: recipe for target 'override_dh_auto_clean' failed
make[1]: *** [override_dh_auto_clean] Error 25