We'd like to know which of our downloads are users and which are continuous integration bots. This is just a metapackage to track the latter, so use it in your travis.yml and the like. I regret that due to forces beyond my understanding, you have to specify psi4 as well to get sensible version behavior for py27, so use the following for stable release (e.g., v1.1 or v1.2) and nightly build respectively.

conda create -q -n p4env python=x.x ci-psi4 psi4 -c psi4

conda create -q -n p4env python=x.x ci-psi4 psi4 -c psi4/label/dev