Cannot run tests on 1.1.0 (and newer)

[TheChymera]

Summary

How to replicate the behavior

chymera@zenhost ~/src/nipype $ py.test -v --cov nipype --cov-config .coveragerc --cov-report xml:cov.xml -c nipype/pytest.ini --doctest-modules nipype
usage: py.test [options] [file_or_dir] [file_or_dir] [...]
py.test: error: unrecognized arguments: -n nipype
  inifile: nipype/pytest.ini
  rootdir: /home/chymera/src/nipype

Platform details:

{'pkg_path': '/usr/lib64/python3.6/site-packages/nipype', 'commit_source': 'archive substitution', 'commit_hash': '%h', 'nipype_version': '1.1.0', 'sys_version': '3.6.6 (default, Jul 27 2018, 23:06:53) \n[GCC 7.3.0]', 'sys_executable': '/usr/lib/python-exec/python3.6/python', 'sys_platform': 'linux', 'numpy_version': '1.14.5', 'scipy_version': '1.1.0', 'networkx_version': '2.1', 'nibabel_version': '2.3.0', 'traits_version': '4.6.0'}
1.1.0

Execution environment

• My python environment outside container

[effigies]

pytest-xdist was added to the dependencies in #2649. In the meantime, you can either remove -n auto from your pytest.ini or install pytest-xdist.

[effigies]

@TheChymera I'm assuming you were able to resolve this issue. Please reopen if there are still issues.