<https://github.com/pantsbuild/pants/pull/3534/com...
# development
r
https://github.com/pantsbuild/pants/pull/3534/commits/3f1efda940653d47c6b5a33d7bd95f21a9eed0c1 seems to fix both the case of
exclude=[‘blah’]
and
exclude=[set([‘blah’])]
in source