Use the vanilla mamba install now mamba is at 1.0.

[trexfeathers]

I now consider Mamba safe to use given the 1.0 release in late 2022. The implementation suggested here is more conventional / less surprising and that's always good.

I have confirmed in my own uses that Conda lock will default to using Mamba if it is available in the environment.

I believe this closes SciTools/iris#5139 - testing locally I am able to resolve the desired lock files by running conda-lock lock in an environment that also contains Mamba.

Not sure how to test that this action works as intended. Have we established any norms on this yet?

[lbdreyer]

I agree that it is perfectly fine to use mamba now. After all, we have been using the conda-libmamba-solver which was only recently no longer deemed "experimental"
What confuses me however, is why conda-libmamba-solver was no longer working if that is using mamba's solver. Very odd!

Nonetheless using mamba directly make sense to me!

Unfortunately, we don't really have a convenient way of testing these workflows (at least not in the sense of a CI solution). In the past I tested it with a test repo that called the workflow from my own fork instead of upstream/main. If you have any suggestions please let me know!

[pp-mo]

I know you guys just merged this, but I don't understand how it works ?

So, you removed conda-mamba-solver from the env used to solve, added mamba, and removed the 'CONDA_EXPERIMENTAL_SOLVER' control var.

But in that case, the basic command is still "conda-lock lock ...".
So, what makes that use mamba ??

[pp-mo]

IIUC, previously the env-var forced the use of the conda solver within basic conda operation.
But should we not now be saying mamba lock ... or something similar ??

[lbdreyer]

But in that case, the basic command is still "conda-lock lock ...".
So, what makes that use mamba ??

conda-lock should use mamba if it is installed in the environment by default

[pp-mo]

But in that case, the basic command is still "conda-lock lock ...".
So, what makes that use mamba ??

conda-lock should use mamba if it is installed in the environment by default

Thanks, I had no idea.
I think I can see that from code now, though sadly their docs are all down now for some reason :-(