Update oldest supported versions

[jared321]

This should resolve Issue #253.

PR Self-review

• Review all changes
• Review oldest GH action's logs
• Confirm all actions passing

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.49%. Comparing base (9ede9de) to head (38aafa0).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #254   +/-   ##
=======================================
  Coverage   94.49%   94.49%           
=======================================
  Files          93       93           
  Lines        3618     3618           
=======================================
  Hits         3419     3419           
  Misses        199      199           

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[jmlarson1]

Any reason why we need jaxlib as a dep in ibcdfo_pypkg/tox.ini‎ but not one of the dependencies in ibcdfo_pypkg/pyproject.toml?

[jared321]

In pyproject.toml we should likely specify only the minimum number of external dependencies possible. Specifically, we should only include those dependencies that we know we use explicitly. This includes jax . If other packages have external dependencies, we let pip figure out those dependencies itself by interrogating those packages. In this case, jax depends on jaxlib , which makes good sense. No need for us to specify jaxlib there.

In the oldest test, I want to control the test's venv carefully to ensure that we are indeed testing the oldest versions. I don't know if pip would install a more modern version of jaxlib if I didn't specify a specific version for jaxlib . So, it the name of being conservative, I specified both versions after manually checking that those are the two oldest, compatible versions that can be installed side-by-side.

Part of this is the fact that those two packages are separate, but (I suspect) intimately related. I almost wonder if they are two packages that effectively work as one.