Plugins incompatible with pytest 4, leads to ContextualVersionConflict

As can be seen in this commit, none of the plugins are compatible with pytest. This causes test suites that depend on them to fail. Consider:

setuptools master $ pip-run -q pytest pytest-virtualenv -- -c "import pkg_resources; pkg_resources.require('pytest-virtualenv')"                                                         
pytest-shutil 1.4.0 has requirement pytest<4.0.0, but you'll have pytest 4.1.1 which is incompatible.
pytest-fixture-config 1.4.0 has requirement pytest<4.0.0, but you'll have pytest 4.1.1 which is incompatible.
pytest-virtualenv 1.4.0 has requirement pytest<4.0.0, but you'll have pytest 4.1.1 which is incompatible.
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Users/jaraco/code/main/setuptools/pkg_resources/__init__.py", line 898, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/Users/jaraco/code/main/setuptools/pkg_resources/__init__.py", line 789, in resolve
    raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (pytest 4.1.1 (/private/var/folders/c6/v7hnmq453xb6p2dbz1gqc6rr0000gn/T/pip-run-svi02ctd), Requirement.parse('pytest<4.0.0'), {'pytest-shutil', 'pytest-fixture-config', 'pytest-virtualenv'})

[jvesely]

Hi all, we just merged #134 to address this, thanks

Hi, do you plan a release that includes this change in the near future?

[eeaston]

Hi all, we just merged #134 to address this, thanks