I’m guessing I could first run

./pants setup-py src/python/pants/

to populate

dist/

? But that fails with

Exception message: Package SourcePackage(u'file:///Users/benjyw/.cache/pants/python_cache/requirements/CPython-2.7.10/Markdown-2.1.1.zip') is not translateable by ChainedTranslator(WheelTranslator, EggTranslator, SourceTranslator)