CondaValueError: Key 'solver' is not a known primitive parameter

Hi

I am trying to install the libmamba solver. I followed the directions @ Anaconda | A Faster Solver for Conda: Libmamba

aedavids@mustard $ conda -V
conda 22.9.0

aedavids@mustard $ conda config --set solver libmamba

CondaValueError: Key 'solver' is not a known primitive parameter.

aedavids@mustard $ conda list |grep libmamba
conda-libmamba-solver     22.6.0             pyhd3eb1b0_0  
libmamba                  1.4.1                hdb19cb5_0  
libmambapy                1.4.1            py38hdb19cb5_0  

I am running on Ubuntu 22.04.02

Any suggestions?

Kind regards

Andy

Solved

It might be a good idea to update Anaconda | A Faster Solver for Conda: Libmamba

The following worked

CONDA_EXPERIMENTAL_SOLVER=classic conda install -n base conda=22.11.0

CONDA_EXPERIMENTAL_SOLVER=classic conda install -n base conda-libmamba-solver=22.12.0

conda config --set solver libmamba

Kind regards

Andy