Ergonomic, hermetic, user-friendly software build system for Python, Go, Java, Kotlin, Protobuf, Scala, Shell. Pants lets you fearlessly scale up your codebase!

Pants

`./pants --python-setup-interpreter-constraints='["CPython&gt;=3.5,&lt;4"]' test tests/python/pants_test/java:nailgun_io` feels like it should work, but only ends up constraining the interpreter, and not the pex which gets created

... such that it fails to run with: ```                     Failed to execute PEX file, missing macosx_10_13_x86_64-cp-27-cp27m compatible dependencies for:
                     pytest-cov
                     pytest
                     pathlib2
                     coverage```