devel/py-jaraco.functools: unbreak egg version after 87dd5acf

$ flexget
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/pkg_resources/__init__.py", line 568, in _build_master
    ws.require(__requires__)
  File "/usr/local/lib/python3.8/site-packages/pkg_resources/__init__.py", line 886, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/local/lib/python3.8/site-packages/pkg_resources/__init__.py", line 777, in resolve
    raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (jaraco.functools 0.0.0 (/usr/local/lib/python3.8/site-packages), Requirement.parse('jaraco.functools>=1.20'), {'tempora'})