fix: add pkg-config and libcairo2-dev so pycairo builds from source - #136
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[WIP] Fix pycairo build failure in devcontainer by adding dependencies
fix: add pkg-config and libcairo2-dev so pycairo builds from source
Aug 7, 2026
lurtz
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August 7, 2026 13:12
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At least this way it is explicitly documented as a requirement towards the environment. Better than a "works on my machine, but no idea why".
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pycairo==1.29.0has no prebuilt wheel for this environment, so pip invokes its meson build backend — which requirespkg-configandlibcairo2-dev(cairo headers +.pcfile). Neither was present, causingpip.parserepository-rule failures in any repo whose dependency graph pulls inpycairo(e.g.eclipse-score/tooling).Changes
versions.yaml— pinpkg_config(1.8.1) andlibcairo2_dev(1.18.0), consistent with the existing version-pinning pattern.install.sh— installpkg-configandlibcairo2-devat their pinned versions alongside the other build-time APT dependencies.tests/test_default.sh— add a smoke test that installspycairo==1.29.0via pip to verify the build dependencies are functional in the final image.