I build from the latest commit (commit b765d87) on osx into a python3.2 virtualenv.

The instructions in README.osx were a life saver but there is one modification is required if you are building for python 3.2. The fetch target in make.osx will only run under python.2x so I had to split the make into two steps.

Instead of
make -f make.osx PREFIX=/Users/jdhunter/dev PYVERSION=2.6
fetch deps mpl_install_std

I needed to run
make -f make.osx PREFIX=/Users/jdhunter/dev PYVERSION=2.6
fetch
make -f make.osx PREFIX=/Users/jdhunter/dev PYVERSION=3.2
deps mpl_install_std