I dont know if I have missed it, but this is not clear to me. I already have miniconda on my machine and I want now to install mamba. How this should be done please, I am supposed to download/run the correct mambaforge installer? Does this co-exist happily side by side with conda or you are supposed to have just one of them on your system. Doing something like conda install mamba is not recommended
Mamba is a replacement conda package manager. They do not co-exist happily as they both rely on a base environment for their dependencies. The recommended way is to install mambaforge or micromamba separately as a replacement.
documentation for Mamba: https://mamba.readthedocs.io/en/latest/installation/mamba-installation.html
documentation for Micromamba: https://mamba.readthedocs.io/en/latest/installation/micromamba-installation.html