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opencolorio: Add version 2.6.0 - #3268
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OpenColorIO's Python bindings, built via cibuildwheel exactly as upstream's wheel_workflow.yml does: setup.py's CMake build with -DOCIO_INSTALL_EXT_PACKAGES=ALL ExternalProject-builds Imath, OpenEXR, expat, pystring, yaml-cpp, minizip-ng, lcms2, pybind11 and zlib from source for every interpreter. No riscv64 wheel is published upstream. Carries a licensing patch (see patches/opencolorio/2.6.0) bundling the licence texts of those statically-linked dependencies, a gap that exists in every opencolorio wheel on PyPI, not just this one.
luhenry
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luhenry
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October 15, 2026 12:13
pyproject.toml's Linux before-build (install_docs_env.sh) dnf-installs doxygen, so setup.py configures with -DOCIO_BUILD_DOCS=ON. The isolated build env's pins (docutils>=0.22.4, sphinx<=7.1.2) are contradictory and backtrack to Sphinx 3.5.3, which cannot be imported on Python >= 3.10, so CMake fails with "Could NOT find sphinx-press-theme" on every interpreter. Upstream's wheel_workflow.yml overrides before-build with "pip install sphinx-press-theme", so its PyPI Linux wheels are built without doxygen and the docs; do the same.
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opencolorio2.6.0Builds OpenColorIO's Python bindings and command-line apps from source via CMake and pybind11. Upstream publishes no riscv64 wheel.
Mirrors upstream's
wheel_workflow.yml.Differs from upstream
Testing
License: the wheel statically links Imath, OpenEXR, expat, pystring, yaml-cpp, minizip-ng, lcms2, pybind11 and zlib (BSD/MIT/Zlib) plus the in-tree argparse/strutil/sampleicc/xxHash (BSD/MIT); upstream's own wheel ships none of their licence texts, so the patch adds them.
Patches
0001-ship-the-licences-of-the-externalproject-built-and-.patch- To upstream [not submitted; same gap exists in every opencolorio wheel on PyPI]. Without it the wheel ships only OCIO's own LICENSE despite statically linking 10+ dependencies; reproduces on every platform.CI pending.