before i dive in, has an error been resolved here recently? this is from pex

2.1.6

in the

1.26.x

pants branch:

Traceback (most recent call last):
   File "/Users/stuhood/src/source/.pants.d/test/pytest-prep/CPython-2.7.16/9ea622545c7f4f99caa61a8eef94bfbd3992d5a7/.bootstrap/pex/pex.py", line 391, in execute
     working_set = self._activate()
   File "/Users/stuhood/src/source/.pants.d/test/pytest-prep/CPython-2.7.16/9ea622545c7f4f99caa61a8eef94bfbd3992d5a7/.bootstrap/pex/pex.py", line 89, in _activate
     for dist in env.activate():
   File "/Users/stuhood/src/source/.pants.d/test/pytest-prep/CPython-2.7.16/9ea622545c7f4f99caa61a8eef94bfbd3992d5a7/.bootstrap/pex/environment.py", line 232, in activate
     self._working_set = self._activate()
   File "/Users/stuhood/src/source/.pants.d/test/pytest-prep/CPython-2.7.16/9ea622545c7f4f99caa61a8eef94bfbd3992d5a7/.bootstrap/pex/environment.py", line 393, in _activate
     resolved = self._resolve(working_set, all_reqs)
   File "/Users/stuhood/src/source/.pants.d/test/pytest-prep/CPython-2.7.16/9ea622545c7f4f99caa61a8eef94bfbd3992d5a7/.bootstrap/pex/environment.py", line 275, in _resolve
     distributions_by_key[<http://distribution.as|distribution.as>_requirement().key].append(distribution)
 AttributeError: 'NoneType' object has no attribute 'as_requirement'

I don’t remember ever seeing this?

it occurs for four python targets at twitter in the 1.26.x branch during activation of the pytest pex