Install from source fails on Windows 10/Conda

On Windows 10 and a fresh Python 3.8 environment on conda 4.8.3, I cloned the pyro repository and ran

python install

After running for a while it fails because it cannot install torch.

I realize this is similar to the other thread called “Install fails on windows”, but the solution there (different python in the path) does not apply to me. I am using the python installed in my fresh conda environment.

How can I fix this?

This is what I see at the tail of console messages:


Installing script to C:\Users\Me\AppData\Local\Continuum\anaconda3\envs\pyro\Scripts
Installing tqdm.exe script to C:\Users\Me\AppData\Local\Continuum\anaconda3\envs\pyro\Scripts

Installed c:\Users\Me\appdata\local\continuum\anaconda3\envs\pyro\lib\site-packages\tqdm-4.46.0-py3.8.egg
Searching for torch>=1.5.0
No local packages or working download links found for torch>=1.5.0
error: Could not find suitable distribution for Requirement.parse('torch>=1.5.0')

(pyro) C:\Users\Me\Documents\Research\pyro>conda install torch
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:

  - torch

I think you need to use the command conda install pytorch torchvision cpuonly -c pytorch. More information can be found here.

1 Like

Thanks. I simply missed the need to install PyTorch manually first.

I noticed that installation instructions in the Docs are to run python install but the ones on the home page say pip install .[extras]. Should the Docs be updated?

Thanks for pointing out! We should remove that entry from docs because it is duplicated with Getting-start section.