Micromamba based setup?

[jaimergp]

Thoughts on this? https://github.com/mamba-org/mamba#micromamba

micromamba is a tiny version of the mamba package manager. It is a pure C++ package with a separate command line interface. It can be used to bootstrap environments (as an alternative to miniconda), but it's currently experimental. The benefit is that it's very tiny and does not come with a default version of Python.

It might be too soon because it's still experimental, but it could be helpful in the future.

[goanpeca]

Hi @jaimergp, thanks for the message.

See the discussion on #66. For now it seems the gains are not worth it, until MM is shipped with the container?

[mariusvniekerk]

So ensureconda (https://github.com/conda-incubator/ensureconda) is a tiny little tool that like pip ensures that a conda (or conda-like) is around.

It has some built in ways to install the standalone conda and micromamba. Generally not intended as a replacement for things like miniconda but more for conda related tools like conda-lock. Might suit some of your needs?

[mariusvniekerk]

We can certainly integrate some of the features from ensureconda into setup-miniconda if it makes sense

[goanpeca]

Hi @mariusvniekerk thanks for it. I have been looking at ensure conda for some work I will be doing in constructor, so thanks for that.

The ideal place would be to have micromamba bundled with the github runners. Otherwise downloading things would be almost the same for the bundled miniconda (installing mamba) then downloading micromamba.

But to have things added to github runners (besides enough requests) is project maturity I think ?

[mariusvniekerk]

Yeah main difference is mostly the micromamba standalone installation doesn't need conda at all, so you save a conda solve for mamba.

[hadim]

The "Setup Conda" step when used with mamba seems to take a long time without installing my custom deps only mamba-version to "*" (~6 min). A mamba only setup would probably fix this.

[goanpeca]

The "Setup Conda" step when used with mamba seems to take a long time without installing my custom deps only mamba-version to "*" (~6 min). A mamba only setup would probably fix this.

Yep that is possible. Investigating these delays and trying to mitigate them.

[bollwyvl]

Provided #126 goes through, this is ready for business, as in #76 (comment)

The difference here is that useMamba would need to get hoisted, earlier, and more forcefully, as no conda command would be available. It's also probably not a constructor-compatible CLI, but I could be wrong... if not, we'll need to do some updating in a few more places.