BLAS warning on Windows builds on conda-forge

[maresb]

Description

WARNING (pytensor.tensor.blas): Using NumPy C-API based implementation for BLAS functions.

See the logs.

I'm going to add some more debug commands to try and get more info.

[ricardoV94]

Probably related to #508

[ricardoV94]

By the way that should be a blocker not to cut a release in conda-forge

[maresb]

To clarify: no conda-forge release until we resolve this warning. Agreed.

[maresb]

The info is now available: https://dev.azure.com/conda-forge/feedstock-builds/_build/results?buildId=829473&view=logs&jobId=171a126d-c574-5c8c-1269-ff3b989e923d&j=171a126d-c574-5c8c-1269-ff3b989e923d&t=623c2ba8-c4f1-582d-6c78-1c7699e2e0a2

Looks like blas__ldflags is empty/unset.

[ricardoV94]

Yeah same issue. CC poor @lucianopaz

[lucianopaz]

I dug into this issue. It looks like conda stores libraries for windows stuff in a different folder. I think that we can fix the problem by simply including the CONDA_PREFIX\Library\bin and CONDA_PREFIX\Library\lib into the library search directories.

That means that #508 is not related to this issue.