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ci: Add a build for wasm
This adds a `pyproject.toml` config for it, so you can replicate locally with cibuildwheel.
1 parent 38257d9 commit 702aff1

4 files changed

Lines changed: 104 additions & 21 deletions

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‎.github/labeler.yml‎

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,9 @@
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---
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"CI: Run cibuildwheel":
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- changed-files:
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- any-glob-to-any-file: ['.github/workflows/cibuildwheel.yml']
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- any-glob-to-any-file:
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- '.github/workflows/cibuildwheel.yml'
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- '.github/workflows/wasm.yml'
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"CI: Run cygwin":
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- changed-files:
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- any-glob-to-any-file: ['.github/workflows/cygwin.yml']

‎.github/workflows/nightlies.yml‎

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@@ -32,28 +32,28 @@ jobs:
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run: |
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PROJECT_REPO="matplotlib/matplotlib"
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BRANCH="main"
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WORKFLOW_NAME="cibuildwheel.yml"
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ARTIFACT_PATTERN="cibw-wheels-*"
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gh run --repo "${PROJECT_REPO}" \
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list --branch "${BRANCH}" \
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--workflow "${WORKFLOW_NAME}" \
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--json event,status,conclusion,databaseId > runs.json
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RUN_ID=$(
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jq --compact-output \
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'[
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.[] |
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# Filter on "push" events to main (merged PRs) ...
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select(.event == "push") |
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# that have completed successfully ...
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select(.status == "completed" and .conclusion == "success")
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] |
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# and get ID of latest build of wheels.
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sort_by(.databaseId) | reverse | .[0].databaseId' runs.json
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)
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gh run --repo "${PROJECT_REPO}" view "${RUN_ID}"
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gh run --repo "${PROJECT_REPO}" \
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download "${RUN_ID}" --pattern "${ARTIFACT_PATTERN}"
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for WORKFLOW_NAME in cibuildwheel.yml wasm.yml; do
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gh run --repo "${PROJECT_REPO}" \
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list --branch "${BRANCH}" \
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--workflow "${WORKFLOW_NAME}" \
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--json event,status,conclusion,databaseId > runs.json
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RUN_ID=$(
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jq --compact-output \
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'[
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.[] |
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# Filter on "push" events to main (merged PRs) ...
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select(.event == "push") |
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# that have completed successfully ...
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select(.status == "completed" and .conclusion == "success")
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] |
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# and get ID of latest build of wheels.
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sort_by(.databaseId) | reverse | .[0].databaseId' runs.json
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)
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gh run --repo "${PROJECT_REPO}" view "${RUN_ID}"
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gh run --repo "${PROJECT_REPO}" download "${RUN_ID}" --pattern "${ARTIFACT_PATTERN}"
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done
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mkdir dist
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mv ${ARTIFACT_PATTERN}/*.whl dist/

‎.github/workflows/wasm.yml‎

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@@ -0,0 +1,61 @@
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---
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name: Build wasm wheels
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on:
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# Save CI by only running this on release branches or tags.
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push:
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branches:
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- main
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- v[0-9]+.[0-9]+.x
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tags:
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- v*
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# Also allow running this action on PRs if requested by applying the
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# "Run cibuildwheel" label.
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pull_request:
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types:
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- opened
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- synchronize
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- reopened
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- labeled
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permissions:
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contents: read
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jobs:
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build_wasm:
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if: >-
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(
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github.event_name == 'push' ||
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github.event_name == 'pull_request' && (
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(
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github.event.action == 'labeled' &&
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github.event.label.name == 'CI: Run cibuildwheel'
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) ||
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contains(github.event.pull_request.labels.*.name,
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'CI: Run cibuildwheel')
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)
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)
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name: Build wasm
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runs-on: ubuntu-24.04
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steps:
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- uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
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with:
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fetch-depth: 0
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persist-credentials: false
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- uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
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name: Install Python
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with:
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python-version: '3.13'
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- name: Build wheels for wasm
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uses: pypa/cibuildwheel@ee02a1537ce3071a004a6b08c41e72f0fdc42d9a # v3.4.0
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env:
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CIBW_PLATFORM: "pyodide"
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- uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
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with:
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name: cibw-wheels-wasm
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path: ./wheelhouse/*.whl
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if-no-files-found: error

‎pyproject.toml‎

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Original file line numberDiff line numberDiff line change
@@ -322,3 +322,23 @@ testpaths = ["lib"]
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addopts = [
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"--import-mode=importlib",
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]
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[tool.cibuildwheel.pyodide]
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test-requires = "pytest"
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test-command = [
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# Wheels are built without test images, so copy them into the testing directory.
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"basedir=$(python -c 'import pathlib, matplotlib; print(pathlib.Path(matplotlib.__file__).parent.parent)')",
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"cp -a {package}/lib/matplotlib/tests/data $basedir/matplotlib/tests/",
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"""
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for subdir in matplotlib mpl_toolkits/axes_grid1 mpl_toolkits/axisartist mpl_toolkits/mplot3d; do
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cp -a {package}/lib/${subdir}/tests/baseline_images $basedir/${subdir}/tests/
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done""",
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# Test installed, not repository, copy as we aren't using an editable install.
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"pytest -p no:cacheprovider --pyargs matplotlib mpl_toolkits.axes_grid1 mpl_toolkits.axisartist mpl_toolkits.mplot3d",
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]
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[tool.cibuildwheel.pyodide.environment]
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# Exceptions are needed for pybind11:
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# https://github.com/pybind/pybind11/pull/5298
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CFLAGS = "-fexceptions"
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CXXFLAGS = "-fexceptions"
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LDFLAGS = "-fexceptions"

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