avoid spike in temp files during installation

[sbailey]

Our current desiconda installations have a ~200k spike in temporary files during an installation, which can cause inode quota problems even if the final installation would fit. Some tips from NERSC to try to avoid this:

CONDA_PKGS_DIRS=$(mktemp -d) conda install ...

They also recommend running this at the end:

conda clean --yes --all

In conf/conda-pkgs.sh we currently run rm -rf $CONDADIR/pkgs/* which is similar but not identical and would need to be updated for these.

I have not actually tested these.

[weaverba137]

@sbailey, I think this is now done as of #68.

[sbailey]

we probably should have done it as part of #68, but that doesn't include either "CONDA_PKGS_DIRS=$(mktemp -d) conda install ..." nor "conda clean --yes --all".

Next time...