Difficulty installing on ARM64 OSX

[dfoil01]

When trying to install tmap on my M2 Mac via the code in the readme:
conda install -c tmap tmap
Conda can't find the package:

Channels:
 - tmap
 - defaults
 - conda-forge
Platform: osx-arm64
Collecting package metadata (repodata.json): done
Solving environment: failed

PackagesNotFoundError: The following packages are not available from current channels:

  - tmap

Current channels:

  - https://conda.anaconda.org/tmap
  - defaults
  - https://conda.anaconda.org/conda-forge

To search for alternate channels that may provide the conda package you're
looking for, navigate to

    https://anaconda.org

and use the search bar at the top of the page.

When I search https://anaconda.org as suggested, I find this page: https://anaconda.org/tmap/tmap

Running the code from there
conda install tmap::tmap

I get the same error as above.

Any advice about what I'm doing wrong? Thanks in advance