MRtrix3 channel not found in anaconda

Hello–
I am having issues installing MRtrix3 on MacOS (ARM64, M1 Pro) using miniconda. I have pasted the output of attempting to install and search for mrtrix3 using conda.

To troubleshoot, I have already tried adding “mrtrix3” to conda’s “current channels” by editing the .condarc file, but this did not work.

(test) ~ fyzeen$ conda install -c mrtrix3 mrtrix3
Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.

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

  - mrtrix3

Current channels:

  - https://conda.anaconda.org/mrtrix3/osx-arm64
  - https://conda.anaconda.org/mrtrix3/noarch
  - https://repo.anaconda.com/pkgs/main/osx-arm64
  - https://repo.anaconda.com/pkgs/main/noarch
  - https://repo.anaconda.com/pkgs/r/osx-arm64
  - https://repo.anaconda.com/pkgs/r/noarch
  - https://conda.anaconda.org/conda-forge/osx-arm64
  - https://conda.anaconda.org/conda-forge/noarch

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.


(test) ~ fyzeen$ conda search mrtrix3
Loading channels: done
No match found for: mrtrix3. Search: *mrtrix3*

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

  - mrtrix3

Current channels:

  - https://repo.anaconda.com/pkgs/main/osx-arm64
  - https://repo.anaconda.com/pkgs/main/noarch
  - https://repo.anaconda.com/pkgs/r/osx-arm64
  - https://repo.anaconda.com/pkgs/r/noarch
  - https://conda.anaconda.org/conda-forge/osx-arm64
  - https://conda.anaconda.org/conda-forge/noarch

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.

Thanks for your help!

I don’t think the conda package currently supports arm64.

The recommended way to install on macOS is to use the binary installer: macOS pre-compiled application package installer. This is currently an x86_64 version, but it should work fine on your M1 Mac (although with a minor performance penalty). In a future release we will switch to universal binaries, which will provide native performance on both x86_64 and arm64.

If you want to use a native arm64 version of MRtrix, currently your only option is to build from source:
https://mrtrix.readthedocs.io/en/latest/installation/build_from_source.html