pantsbuild/pants — pull request #18 by jsirois (2014-04-05 15:55:52+00:00)
Title: Fixup pants binary constraints.

Limit compatibility to 2.6 through 2.7 and 3.3+ to avoid issues
with 3.0 through 3.2 not supporting unicode literals. This now
explicitly runs afould of pants import headers.

https://rbcommons.com/s/twitter/r/176/