intel-openmp package dependency issue

[dmargala]

While trying to create my own desiconda env following the instructions in this repo, I ran into an issue finding the intel-openmp conda package from conda-forge.

I checked the main desi environment and found the this package is included there but does not come from conda-forge. For example, these packages in the desi environment do not come from pypi or conda-forge:

dmargala@perlmutter:login36:~> conda list | grep -v -e conda-forge -e pypi
# packages in environment at /global/common/software/desi/perlmutter/desiconda/20240425-2.2.0/conda:
#
# Name                    Version                   Build  Channel
ca-certificates           2024.7.2             h06a4308_0
certifi                   2024.7.4        py310h06a4308_0
conda                     24.7.1          py310h06a4308_0
cssselect                 1.2.0           py310h06a4308_0
frozendict                2.4.2           py310h5eee18b_0
intel-openmp              2023.1.0         hdb19cb5_46306
pymdown-extensions        9.11            py310h06a4308_0
pyquery                   1.4.3           py310h06a4308_0
regex                     2024.7.24       py310h5eee18b_0

It looks like the desi user at NERSC has a ~/.condarc file that allows it to pull in packages from the "defaults" channel.