[BUG]: Attempting to build mcstas from conda, fails using other conda than micromamba

[Lomholy]

Describe the bug
Following this guide: https://github.com/mccode-dev/McCode/wiki/Build-your-own-McStas-or-McXtrace-via-conda%E2%80%90forge

And attempting to create the environment with the yml file on a non-micromamba conda:

conda create -f mcstas-dev.yml

fails with <ArgumentError: one of the arguments -n/--name -p/--prefix is required>.

This is apparently a known issue with conda:
conda/conda#13015

But it can be fixed by running:
<conda env create --file mcstas-dev.yml>

OS and McStas/McXtrace version (please complete the following information):

• OS: MacOS
• McCode variant: McStas

I believe the solution is merely to update the docs, to reflect that this is how it should be done.

[willend]

Right, my daily driver is clearly micromamba. Will highlight that we recommend micromamba for this purpose, show syntax for that and mention that syntax may differ if using “other types of snakes”.