Remove mamba command and switch to Miniforge3

[xylar]

This is the equivalent of the Compass PR MPAS-Dev/compass#751.

Checklist

• User's Guide has been updated
• Developer's Guide has been updated
• Documentation has been built locally and changes look as expected
• Testing comment in the PR documents testing used to verify the changes

[xylar]

Testing

I created a new development environment for polaris using a miniforge3 installation on my laptop.

[mark-petersen]

with this commit, should we now use

./configure_polaris_envs.py  --conda /usr/projects/climate/mpeterse/miconda3 # on LANL IC
./configure_polaris_envs.py  --conda ~/miconda3 # everywhere else

or create some other conda directory? Does it matter if polaris and compass use the same ~/miconda3 directory, if I am using them at the same time? Thanks.

[xylar]

You should do:

./configure_polaris_envs.py  --conda /usr/projects/climate/mpeterse/miniforge3

on LANL IC. (We don't recommend using Miniconda3 and it would be confusing to call a miniforge3 installation miniconda3 or miconda3.)

[xylar]

or create some other conda directory? Does it matter if polaris and compass use the same ~/miconda3 directory, if I am using them at the same time? Thanks.

They should use the same ~/miniforge3 directory, yes.

[xylar]

It should work to use an existing ~/miniconda3 or ~/mambaforge if you already have one. You don't need to create a new ~/miniforge3 directory if you already have conda installed somewhere.