Say you have an MRO-based conda environment for doing data science with R. You want to shift over to the Anaconda R world, though, for fixing library problems or for updates of some sort. You can't just use conda:
conda install r-base
You'll get unsatisfiable errors, because the MRO packages that exist in your environment can't coexist with their Anaconda R counterparts. They're not compatible, and the metadata is designed to prevent this coexistence. You could just create a new environment, but that might be tedious, depending on how many dependencies you have.
What this tool does is remove all MRO-specific packages, then updates your remaining packages to use Anaconda R instead of MRO. That remove-update cycle takes care of the unsatisfiability.
To use this tool, run its command line:
mro-migrator ~/miniconda3/envs/your-r-env
The default behavior is just to tell you which MRO-only packages will be
removed. The tool does not change anything by default. To actually execute a migration, pass the --execute flag:
mro-migrator --execute ~/miniconda3/envs/your-r-env
There's very little error handling in this tool. If your environment is not readily reproducible, it's wise to back it up before you run this tool.