Obtain CDAT nightly packages

Nightly versions are versions of CDAT packages that have passed all of the CDAT test suites but have not yet been officially released. These are generally safe to use (but probably not for production).

Nightly (or near nightly) versions of CDAT can be obtained as follows:

conda create -n nightly -c cdat/label/nightly -c conda-forge cdat python=3.6

To use this, type:

conda activate nightly

This sets up the environment with a nightly version of CDAT.