buildout/buildout — pull request #12 by mgedmin (2012-08-21 11:08:19+00:00)
Title: Support multiple Pythons in the same working tree

This way you can run the tests against several python versions by doing

make PYTHON_VER=2.6 build test
make PYTHON_VER=2.7 build test
make PYTHON_VER=3.2 build test

repeatedly, without having to re-download and recompile the respective
clean Python interpreters.