connected-components-3d: add build-connected-components-3d.yml for riscv64 wheels - #1450
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…scv64 wheels Cython/C++ connected-components labeling for 2D/3D images. Mirrors upstream's build_wheel.yml with cibuildwheel narrowed to riscv64. scipy has no cp314t wheel anywhere, so that leg drops scipy and deselects the two tests that need it.
luhenry
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Sep 7, 2026
…el in tests automated_test.py sits next to the unbuilt cc3d/ source directory; pytest's rootdir insertion put that directory ahead of the installed wheel on sys.path, so `from .fastcc3d import ...` failed against the uncompiled source. Stage only the test file via CIBW_TEST_SOURCES (gotcha 25).
…y deselect list crackle-codec (the optional stack extra's codec) has no riscv64 wheel on either index; test_connected_components_stack imports it unconditionally via cc3d's own connected_components_stack(), so deselect it everywhere rather than building pybind11/google_crc32c from source for one optional extra. Also catches test_compare_scipy_6, which the previous --deselect list missed.
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connected-components-3d4.1.0Compiles a Cython/C++ extension for connected-component labeling on 2D/3D images (26/18/6-connected variants). Upstream publishes no riscv64 wheel.
Mirrors upstream's
build_wheel.yml.Differs from upstream
Testing
fastremap(a hard test import) has no riscv64 wheel on either index, so pip builds it from sdist.scipyhas no cp314t wheel anywhere, so that leg drops it and deselects the two tests that need it.License: OK
Built on cp312; ran locally off the checkout to confirm the extension compiles and imports cleanly before pushing.