Always assume micromamba

[martinRenou]

We should also always assume micromamba is here and useable and stop using conda/mamba. Since micromamba is installable with conda, it should be a requirement.

Let's make it for 4.0.0

[jtpio]

Curious about the motivation for this? Is it mostly for performance, or other reasons?

[DerThorsten]

only micromamba has the "re-locate" feature where we pretend that the prefix would be "/"

[jtpio]

ok then a 4.0 release with this mentioned somewhere in the docs sounds like it would be fine 👍

[martinRenou]

As discussed with @davidbrochart, we could actually depend on libmambapy only and stop calling subprocesses for conda/micromamba.

We just need to make sure libmambapy supports prefix relocation, or add the relocation feature there if it's missing.

[davidbrochart]

As discussed with @davidbrochart, we could actually depend on libmambapy only and stop calling subprocesses for conda/micromamba.

If seems that libmambapy doesn't offer the API we need yet: mamba-org/mamba#1922 (comment).