Mamba build failing with "Cannot write repodata"

[maxnoe]

https://github.com/conda-incubator/setup-miniconda/runs/5712984347?check_suite_focus=true

We see the same error in our CI jobs. Anything we can do?

[maxnoe]

We fixed our CI build by adding:

      - name: Create conda cache dir
        run: |
          # fix mamba error that the directory does not exist
          mkdir -p ~/conda_pkgs_dir/cache

But this should probably be fixed here

[jaimergp]

This could be considered a bug in mamba. I think conda ensures the directory exists. That said, we can probably add a workaround here too. Thanks!