Upgrade distribute_setup.py script to 0.6.45, since then it will recognize that setuptools 0.7 or later is 'good enough' and won't try to replace it.
Fix evaluating a SCompositeModel with labeled input
Merge pull request #1180 from mdboom/setup/upgrade-distribute-setup

Error: A 0.7-series setuptools cannot be installed with distribute
Merge pull request #1193 from nden/scomposite-with-labeled-input

Fix evaluating a SCompositeModel with labeled input
New Parametric1DModel and Custom1DModel class