Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

networkx-2.3 pin breaking macOS builds on python3.9

See original GitHub issue

@conda-forge/staged-recipes, I’m sure someone else has already reported this, but it looks like the osx miniforge installation has just jumped to python3.9, which breaks networkx so even skip: true # [osx] builds are breaking [ref]:

+ python .ci_support/build_all.py

Traceback (most recent call last):
  File "/Users/runner/work/1/s/.ci_support/build_all.py", line 2, in <module>
    import networkx as nx
  File "/Users/runner/miniforge3/lib/python3.9/site-packages/networkx/__init__.py", line 114, in <module>
    import networkx.generators
  File "/Users/runner/miniforge3/lib/python3.9/site-packages/networkx/generators/__init__.py", line 14, in <module>
    from networkx.generators.intersection import *
  File "/Users/runner/miniforge3/lib/python3.9/site-packages/networkx/generators/intersection.py", line 13, in <module>
    from networkx.algorithms import bipartite
  File "/Users/runner/miniforge3/lib/python3.9/site-packages/networkx/algorithms/__init__.py", line 16, in <module>
    from networkx.algorithms.dag import *
  File "/Users/runner/miniforge3/lib/python3.9/site-packages/networkx/algorithms/dag.py", line 23, in <module>
    from fractions import gcd
ImportError: cannot import name 'gcd' from 'fractions' (/Users/runner/miniforge3/lib/python3.9/fractions.py)

This was corrected in https://github.com/networkx/networkx/pull/3639 and released with networkx-2.4.

_Originally posted by @duncanmmacleod in https://github.com/conda-forge/staged-recipes/issues/14227#issuecomment-826674984_