Handle windows conda library directories in default blas

[lucianopaz]

Closes #515

Major / Breaking Changes

• ...

New features

• ...

Bugfixes

• Fix conda C library detection on Windows

Documentation

• ...

Maintenance

• ...

[michaelosthege]

is that failing test a bug uncovered by a change in the graph?

[codecov-commenter]

Codecov Report

Merging #517 (7943c3d) into main (91d3b7c) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #517   +/-   ##
=======================================
  Coverage   80.82%   80.82%           
=======================================
  Files         162      162           
  Lines       46189    46194    +5     
  Branches    11288    11290    +2     
=======================================
+ Hits        37330    37335    +5     
  Misses       6633     6633           
  Partials     2226     2226           

Files	Coverage Δ
pytensor/link/c/cmodule.py	55.52% <100.00%> (+0.18%)	⬆️

[lucianopaz]

is that failing test a bug uncovered by a change in the graph?

The failing test happened because there were empty blas__ldflags

[ricardoV94]

Isn't it good that the test actually failed?

[ricardoV94]

Okay you changed the dprint one, that's fine

[lucianopaz]

The other failing test was caused by having one extra line in the print statement: the warning you get at import when no blas headers are available. That doesn’t seem to be a valid failure to me

[lucianopaz]

Just to be clear, this doesn’t close #508. That one looks more like a nixOS problem with libraries and I need more info to address it

[ricardoV94]

Yeah, I just wonder if we will be blind about regressions, not that this test should have that responsibility

[ricardoV94]

@michaelosthege can you locally try on your Windows machine?

>>python -c "import pytensor; print(pytensor.config.blas__ldflags)"

[michaelosthege]

@michaelosthege can you locally try on your Windows machine?

>>python -c "import pytensor; print(pytensor.config.blas__ldflags)"

-L"C:\Users\osthege\AppData\Local\mambaforge\envs\ptenv\Library\bin" -L"C:\Users\osthege\AppData\Local\mambaforge\envs\ptenv" -llapack -lblas -lcblas -lm -Wl,-rpath,C:\Users\osthege\AppData\Local\mambaforge\envs\ptenv\libs

environment was created by

mamba create -n ptenv "python=3.10" pytensor -y

followed by pip install -e . in this branch