Conda is my go to python environment management tool. I have talked about it here.
Eventually as you use the conda commands, your environments become bloated, have stuff you no longer need or know. Recently saw an example of this on my old vdi system.
Here are three useful commands in conda to reign in this bloated beasts.
Remove unused cached files including unused packages in Conda
conda clean –all
List all revisions made in the active environment
conda list –revisions
Restore an environment to a previous revision
conda install –name ENVNAME –revision
Hope this helps. It surely helped me.