tree a621340e836506e656acfa77c982c8e6d823bcd6
parent 37d82dce06e40d9985b8ad3663fceeb968e342db
author Jim Purbrick <jimp@fb.com> 1384784481 -0800
committer Michael Bolin <mbolin@fb.com> 1384915390 -0800

Fix python configuration processing.

Summary:
Previously buck would try to use any executable file or
directory in its working directory as a python interpreter. It would
also silently fall back to finding a python on the PATH if a python
path was specified in the config, but invalid. This change fixes both
of those problems and adds tests.

Test Plan:
0) buck test --all
1) mkdir python
2) touch BUCK
3) check that "buck build :lolwut" returns the error "BUILD FAILED: No rule
found when resolving target //:lolwut in build file //BUCK"