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Merged
cvanelteren merged 1 commit into from
Feb 15, 2026
Merged

CI: test representative version matrix combinations #587

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27 changes: 24 additions & 3 deletions .github/workflows/main.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -116,6 +116,7 @@ jobs:
outputs:
python-versions: ${{ steps.set-versions.outputs.python-versions }}
matplotlib-versions: ${{ steps.set-versions.outputs.matplotlib-versions }}
test-matrix: ${{ steps.set-versions.outputs.test-matrix }}
steps:
- uses: actions/checkout@v6
with:
Expand Down Expand Up @@ -187,9 +188,28 @@ jobs:
mpl_versions = ["3.9"]

# Create output dictionary
midpoint_python = python_versions[len(python_versions) // 2]
midpoint_mpl = mpl_versions[len(mpl_versions) // 2]
matrix_candidates = [
(python_versions[0], mpl_versions[0]), # lowest + lowest
(midpoint_python, midpoint_mpl), # midpoint + midpoint
(python_versions[-1], mpl_versions[-1]) # latest + latest
]
test_matrix = []
seen = set()
for py_ver, mpl_ver in matrix_candidates:
key = (py_ver, mpl_ver)
if key in seen:
continue
seen.add(key)
test_matrix.append(
{"python-version": py_ver, "matplotlib-version": mpl_ver}
)

output = {
"python_versions": python_versions,
"matplotlib_versions": mpl_versions
"matplotlib_versions": mpl_versions,
"test_matrix": test_matrix,
}

# Print as JSON
Expand All @@ -203,8 +223,10 @@ jobs:

echo "Detected Python versions: ${PYTHON_VERSIONS}"
echo "Detected Matplotlib versions: ${MPL_VERSIONS}"
echo "Detected test matrix: $(echo $OUTPUT | jq -c '.test_matrix')"
echo "python-versions=$(echo $PYTHON_VERSIONS | jq -c)" >> $GITHUB_OUTPUT
echo "matplotlib-versions=$(echo $MPL_VERSIONS | jq -c)" >> $GITHUB_OUTPUT
echo "test-matrix=$(echo $OUTPUT | jq -c '.test_matrix')" >> $GITHUB_OUTPUT

build:
needs:
Expand All @@ -214,8 +236,7 @@ jobs:
if: always() && needs.run-if-changes.outputs.run == 'true' && needs.get-versions.result == 'success' && needs.select-tests.result == 'success'
strategy:
matrix:
python-version: ${{ fromJson(needs.get-versions.outputs.python-versions) }}
matplotlib-version: ${{ fromJson(needs.get-versions.outputs.matplotlib-versions) }}
include: ${{ fromJson(needs.get-versions.outputs.test-matrix) }}
fail-fast: false
max-parallel: 4
uses: ./.github/workflows/build-ultraplot.yml
Expand Down