py-grako: fails to install, needs py-pytest-runner dependency

[mojca (Mojca Miklavec)]

See ​buildbot logs:

[38/41] Cythonizing grako/tool.py
[39/41] Cythonizing grako/util.py
[40/41] Cythonizing grako/walkers.py
[41/41] Cythonizing grako/yaml.py

Note: Bypassing https://pypi.python.org/simple/pytest-runner/ (disallowed host; see http://bit.ly/2hrImnY for details).

Couldn't find index page for 'pytest-runner' (maybe misspelled?)

Note: Bypassing https://pypi.python.org/simple/ (disallowed host; see http://bit.ly/2hrImnY for details).

No local packages or working download links found for pytest-runner
Traceback (most recent call last):
  File "setup.py", line 77, in <module>
    ) if CYTHON else [],
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/__init__.py", line 128, in setup
    _install_setup_requires(attrs)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/__init__.py", line 123, in _install_setup_requires
    dist.fetch_build_eggs(dist.setup_requires)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/dist.py", line 513, in fetch_build_eggs
    replace_conflicting=True,
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pkg_resources/__init__.py", line 774, in resolve
    replace_conflicting=replace_conflicting
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pkg_resources/__init__.py", line 1057, in best_match
    return self.obtain(req, installer)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pkg_resources/__init__.py", line 1069, in obtain
    return installer(requirement)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/dist.py", line 580, in fetch_build_egg
    return cmd.easy_install(req)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/command/easy_install.py", line 667, in easy_install
    raise DistutilsError(msg)
distutils.errors.DistutilsError: Could not find suitable distribution for Requirement.parse('pytest-runner')
Command failed:  cd "/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_python_py-grako/py36-grako/work/grako-3.99.9" && /opt/local/Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6 setup.py --no-user-cfg build 
Exit code: 1

[ryandesign (Ryan Carsten Schmidt)]

[b1cc55fbe840c4c497b0b9c1316905a07bd53bf9/macports-ports]