okay kris - I get a different import error trying to consume the android sdist:

Requirement already satisfied (use --upgrade to upgrade): beautifulsoup4<4.4,>=4.3.2 in ./build-support/pants_dev_deps.venv/lib/python2.7/site-packages (from -r /Users/mateo/dev/pants/pants-plugins/3rdparty/python/requirements.txt (line 1))
Exception caught: (<type 'exceptions.ImportError'>)
  File "/Users/mateo/dev/pants/src/python/pants/bin/pants_exe.py", line 50, in <module>
    main()
  File "/Users/mateo/dev/pants/src/python/pants/bin/pants_exe.py", line 44, in main
    PantsRunner(exiter).run()
  File "/Users/mateo/dev/pants/build-support/pants_dev_deps.venv/lib/python2.7/site-packages/pants/bin/pants_runner.py", line 57, in run
    options_bootstrapper=options_bootstrapper)
  File "/Users/mateo/dev/pants/build-support/pants_dev_deps.venv/lib/python2.7/site-packages/pants/bin/pants_runner.py", line 44, in _run
    from pants.bin.local_pants_runner import LocalPantsRunner
  File "/Users/mateo/dev/pants/build-support/pants_dev_deps.venv/lib/python2.7/site-packages/pants/bin/local_pants_runner.py", line 11, in <module>
    from pants.bin.goal_runner import GoalRunner
  File "/Users/mateo/dev/pants/build-support/pants_dev_deps.venv/lib/python2.7/site-packages/pants/bin/goal_runner.py", line 18, in <module>
    from pants.bin.engine_initializer import EngineInitializer
  File "/Users/mateo/dev/pants/build-support/pants_dev_deps.venv/lib/python2.7/site-packages/pants/bin/engine_initializer.py", line 16, in <module>
    from pants.engine.engine import LocalSerialEngine
  File "/Users/mateo/dev/pants/src/python/pants/engine/engine.py", line 19, in <module>
    from pants.engine.storage import Cache, Storage
  File "/Users/mateo/dev/pants/src/python/pants/engine/storage.py", line 23, in <module>
    from pants.engine.scheduler import StepRequest, StepResult
  File "/Users/mateo/dev/pants/src/python/pants/engine/scheduler.py", line 17, in <module>
    from pants.engine.fs import PathGlobs
  File "/Users/mateo/dev/pants/src/python/pants/engine/fs.py", line 18, in <module>
    from pants.base.project_tree import Dir, File, Link

Exception message: cannot import name Dir