Failed to install pychrono using conda

[Fuchen Chen]

Hi, 

After the 7.0.0 update, I am having trouble installing the pychrono using "conda install -c projectchrono pychrono" or "conda install -c projectchrono/label/develop pychrono". I currently manually download the package and install from the local file, which seems to bypass the version checking. All the code also seems to work. 

Steps I am using: 

1. From anaconda prompt: conda create --name test python=3.9

2. conda activate test

3. conda install -c projectchrono pychrono

System: Windows 10

Here is the error message: 

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: The following specifications were found
to be incompatible with the existing python installation in your environment:

Specifications:

  - pychrono -> python[version='>=2.7,<2.8.0a0']

Your python: python=3.9

If python is on the left-most side of the chain, that's the version you've asked for.
When python appears to the right, that indicates that the thing on the left is somehow
not available for the python version you are constrained to. Note that conda will not
change your python version to a different minor version unless you explicitly specify
that.

Hope this helps.

Best,

Fuchen

[ben...@wisc.edu]

Hi Fuchen,

I fear that Conda is looking for some dependencies in conda-forge. Could you please:

- uninstall pychrono

-  call

conda config --add channels https://conda.anaconda.org/conda-forge
conda config --add channels https://conda.anaconda.org/intel

- and finally

conda install -c projectchrono pychrono

Thanks,

Simon

[Fuchen Chen]

Those commands fixed the problem. Thank you so much!