Explicitly document features that are missing wrt conda

[corneliusroemer]

Describe your issue

I love micromamba, I want to ditch conda (and also mamba) altogether and just use lean micromamba.

However, I sometimes find that conda features are missing from micromamba. While I know that some features are missing, and there are existing issues and PRs, it would be nice to have a somewhat comprehensive list of missing features.

This time I found out that micromamba update does not work with the -f flag, in the way conda does. This is new to me and I couldn't find it explicitly mentioned anywhere. All I could find is that "micromamba strives to be a full reimplementation". strives can be read as "it currently isn't", but being a bit more explicit would be great!

I totally understand that you may not want to implement all of the features of conda - but for users it would be very valuable if you could document what you haven't (re-)implemented. Right now, the README does not mention any lack of features at all:

Related issues/PRs:

• "Mamba install -- revision XX" never works #2209
• Feature request: Revisions #803
• Corollary to conda install --revision [feature-request] #1749
• doc: mention lack of support of conda feature "revisions" in readme #3348

mamba info / micromamba info

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Logs

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environment.yml

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~/.condarc

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