Conda package finds conflicts on newly created env and fails to show them

Question

I tried to install menpodetect after creating a new env in Anaconda

conda create --name detector
conda activate detector
conda install -c menpo menpodetect

Anaconda cloud: https://anaconda.org/menpo/menpodetect

This is the output of conda install -c menpo menpodetect

Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: -
Found conflicts! Looking for incompatible packages.
This can take several minutes.  Press CTRL-C to abort.\
failed

UnsatisfiableError:

python --version -> Python 3.7.4

conda list is empty (since the env has just been created)

What's wrong?

EDIT --------------------------------------------------------------------------------------------------

conda install -c conda-forge menpodetect returns

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:

  - menpodetect

Current channels:

  - https://conda.anaconda.org/conda-forge/win-64
  - https://conda.anaconda.org/conda-forge/noarch
  - https://repo.anaconda.com/pkgs/main/win-64
  - https://repo.anaconda.com/pkgs/main/noarch
  - https://repo.anaconda.com/pkgs/r/win-64
  - https://repo.anaconda.com/pkgs/r/noarch
  - https://repo.anaconda.com/pkgs/msys2/win-64
  - https://repo.anaconda.com/pkgs/msys2/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.

Answer 1

The menpodetect team has dropped support for windows and does not plan to reintroduce it . The only version still available for windows is the 3 year old 0.5 version, as you can see on the anaconda website .

With a package that old, it can happen that not all dependencies are still available from the default channels. You can however still install it, if you use the free channel , which contains packages prior to September 2017. It was removed from conda defaults with 4.7.

Use:

conda install -c free -c menpo menpodetect

Depending on your usecase however, it might be preferable to switch to Linux or OSX to be able to install the latest version using James suggestion

Answer 2

Try installing it from the conda-forge channel. The author started migrating to that channel about a year ago.

conda install -c conda-forge menpodetect