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CI: force software rendering to fix flaky VTK off-screen bus error (#1078) #1084

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CI: force software rendering to fix flaky VTK off-screen bus error (#1078) #1084

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4 changes: 4 additions & 0 deletions .github/workflows/test-pytest-slow.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,10 @@ jobs:
env:
PYTHON: ${{ matrix.python-version }}
MPLBACKEND: Agg
# Force Mesa software rendering so VTK/PyVista off-screen tests don't hit
# intermittent OpenGL bus errors on headless runners (#1078).
LIBGL_ALWAYS_SOFTWARE: "1"
GALLIUM_DRIVER: llvmpipe
steps:
- uses: actions/checkout@main
- name: Set up headless display
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5 changes: 5 additions & 0 deletions .github/workflows/test_pytest.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,11 @@ jobs:
OS: ${{ matrix.os }}
PYTHON: ${{ matrix.python-version }}
MPLBACKEND: Agg
# Force Mesa software rendering so VTK/PyVista off-screen tests don't hit
# intermittent OpenGL bus errors on headless runners (#1078). No-op off
# Linux, so it is safe for the macOS/Windows matrix legs.
LIBGL_ALWAYS_SOFTWARE: "1"
GALLIUM_DRIVER: llvmpipe
steps:
- uses: actions/checkout@main
- name: Set up headless display
Expand Down
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