coverage: 94.744%. remained the same
when pulling 6c628f0 on slivingston:ci-add-defaults-miniforge
into 061749d on python-control:main.

@slivingston Despite the claim that all checks completed, in fact the conda-based tests did not complete. See OS/BLAS test matrix run. It looks like the conda test matrix gets created but does not run.

The error is

Error when evaluating 'strategy' for job 'test-conda'. 
.github/workflows/os-blas-test-matrix.yml (Line: 277, Col: 15): 
Error parsing fromJson,.github/workflows/os-blas-test-matrix.yml (Line: 277, Col: 15): 
Error reading JToken from JsonReader. Path '', line 0, position 0.,.github/workflows/os-blas-test-matrix.yml (Line: 277, Col: 15): 
Unexpected value ''

???

@slivingston Despite the claim that all checks completed, in fact the conda-based tests did not complete. See OS/BLAS test matrix run. It looks like the conda test matrix gets created but does not run.

The error is

Error when evaluating 'strategy' for job 'test-conda'. 
.github/workflows/os-blas-test-matrix.yml (Line: 277, Col: 15): 
Error parsing fromJson,.github/workflows/os-blas-test-matrix.yml (Line: 277, Col: 15): 
Error reading JToken from JsonReader. Path '', line 0, position 0.,.github/workflows/os-blas-test-matrix.yml (Line: 277, Col: 15): 
Unexpected value ''

???

Good catch. Yes, I am investigating this and a similar change for Slycot on which I am working.

It looks like the same hidden error happened 2 weeks ago in a different PR: https://github.com/python-control/python-control/actions/runs/13107250760

Commit 1ceeeea deleted required imports in a test matrix generation script, resulting in an uncaught exception. The backtrace from Python would then be used as the saved output in a step of the workflow file. One of the next jobs tries to parse this output as JSON, hence the error from JsonReader. This is treated as a syntax error in the workflow file, thus an incomplete rather than a failed job.

I modified the workflow files so that errors from the test matrix generation scripts surface clearly as failed jobs.

...actually, still debugging. I will finish it in the morning.

This is ready for review.

Sorry for the extra delete in 1ceeeea

Sorry for the extra delete

@bnavigator No worries! I only intended to find the origin, not accuse anyone.