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pylance is lance's own Python binding (python/ subdir of lancedb/lance, maturin/PyO3-based). Ships one cp310-abi3 wheel per upstream's own CI matrix, built here on cp312. lance-linalg's f32/f64/i32 SIMD types compile only for x86_64/aarch64/loongarch64 upstream (unlike u8, which already has a portable fallback); patches/pylance/11.0.0/0001*.patch adds the same shape of fallback, verified against an isolated copy of the module with cargo check for riscv64gc-unknown-linux-gnu plus aarch64/x86_64 regressions.
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pylance11.0.0Compiles Lance's Rust core (arrow, datafusion, lance-index, lance-namespace) into a pyo3 abi3 extension via maturin - pylance is lance's own Python binding, living under
python/in the same repo. Upstream publishes no riscv64 wheel.Mirrors upstream's
pypi-publish.yml.Differs from upstream
build-lancedb.ymlfp16kernelsfeature - no riscv64 equivalentMatrix: cp312 only - pyo3 carries
abi3-py310unconditionally, so one build covers every interpreter (asbuild-lancedb.ymldoes)Testing
make test(no marker filtering), with pytest-xdist's auto workersml_dtypeshas no riscv64 wheel and builds from its (pure C++) sdist insteadLicense: OK
Patches
0001-lance-linalg-add-a-portable-riscv64-simd-fallback.patch- To upstream. Adds a portable fallback for SIMD types that only compile on x86_64/aarch64/loongarch64; reproduces on riscv64 only.Built on cp312; TBD passed, TBD skipped.