Wierd problem installing PYMC

Questions v5
13

Comparing conda exports from working and not working environments, I found that pinning libgcc to an earlier version fixes it:

This envirnoment works:

name: working_env
channels:
  - conda-forge
  - defaults
dependencies:
  - python = 3.12
  - scikit-learn
  - pandas
  - numpy
  - matplotlib
  - pytensor=2.28.2
  - pymc = 5.21
  - arviz = 0.21
  - jupyter
  - pip
  - libgcc=14.2.0=h1383e82_2

This one doesn’t (same as above except remove the -libgcc pin:

name: broken_env
channels:
  - conda-forge
  - defaults
dependencies:
  - python = 3.12
  - scikit-learn
  - pandas
  - numpy
  - matplotlib
  - pytensor=2.28.2
  - pymc = 5.21
  - arviz = 0.21
  - jupyter
  - pip

In this version, libgcc is 15.1.0

The other pinned versions may not matter, I just have not had a chance to test that (building and destroying conda environments is a bit time consuming !)

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