Pre-defined `conda` environment yaml files

[adriendelsalle]

Description

Is there any reason for not having listed cxx-compiler and a generator like make or ninja in pre-defined conda environment yaml files?

[benbovy]

No particular reason :).

Except maybe in the case where one may just want to use the system-wide installed compilers and finds annoying that heavy compiler packages get re-installed in the conda env?

I have no strong opinion for / against adding it.

[adriendelsalle]

I had error building tests relying on Ubuntu system libs. To keep the CI testing a lot of platforms/toolchains it would require to also update the workflows. I'll have a look at this

[benbovy]

I was also thinking we could try pixi for this repository.