Enable the new error messages for the libmamba solver option

[crogoz]

Checklist

• I added a descriptive title
• I searched open requests and couldn't find a duplicate

What is the idea?

Conda allows using the libmamba experimental solver. Mamba recently added new error messages (see https://medium.com/@AntoineProuvost/managing-conflicts-with-mamba-6a5fa10ed6a) that show the full dependency tree and the reason for failures.
The new error messages can be enabled setting the experimental_sat_error_message: true in .condarc.

Why is this needed?

The users will get an easy to understand error message - getting the full dependency tree and the reason for incompatibility.

What should happen?

A user will add experimental_sat_error_message: true in .condarc.
When they get an error message from conda, they will see both the old error message & the new experimental error message.

Additional Context

No response

[jaimergp]

While this is available on micromamba, the Python bindings for libmamba do not yet expose the Context.experimental_sat_error_message attribute, so we can't enable them yet :(

$ conda list libmambapy
libmambapy                1.1.0            py39hf0aba66_3    conda-forge
$ python -c "from libmambapy import Context; print(Context().experimental_sat_error_message)"
AttributeError: 'libmambapy.bindings.Context' object has no attribute 'experimental_sat_error_message'

Work being done on #103 if you want to track progress!

[crogoz]

hey @jaimergp,
Thanks for looking into this! the newest version of libmambapy (1.2.0) should have the bindings for the experimental_sat_error_message attribute.
Also, I think .condarc might need to allow an experimental_sat_error_message attribute to be set.

$  python -c "from libmambapy import Context; print(Context().experimental_sat_error_message)"
False
$ conda list libmambapy
libmambapy                1.2.0           py311hf90d2e5_0    artifactory/external-conda-forge

[costrouc]

Thanks for creating this issue @syslaila and letting us know that it is know available. I'm work on getting this added this week.

[jezdez]

FWIW libmamba 1.3.1 and libmambapy 1.3.1 were released on defaults.