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Ports lancedb 0.37.1 (maturin/pyo3, abi3-py310) to riscv64. Builds one cp310-abi3 wheel on cp312 with the same OOM/timeout mitigations build-deltalake.yml uses for a comparably sized Cargo workspace (~750 resolved crates for riscv64gc-unknown-linux-gnu): swap space, thin LTO/codegen-units=16 in place of the shipped fat-LTO release profile, and CARGO_BUILD_JOBS=2. protoc comes from Rocky 10's CRB repo, same as build-statsig-python-core.yml. Test suite mirrors run_tests/action.yml's non-integration path, with six files excluded for unconditional `import polars`/`import lance` (pylance) module-scope imports that have no riscv64 wheel.
lance-core's SIMD_SUPPORT static and lance-linalg's f32x8/f32x16/i32x8/ f64x4/f64x8 SIMD types compile only for x86_64/aarch64/loongarch64 upstream, so the first CI run failed at lance-core with "expected SimdSupport, found ()". Redirects both crates (pinned at =10.0.0) to a sibling checkout of the same tag carrying a portable scalar fallback, mirroring u8x16/u8x32's existing shape. Workflow clones that checkout and applies both patches before invoking cibuildwheel.
\`git -C lance apply ../python-wheels/...\` resolves the patch file's own path relative to lance/ once git changes into it, but bash still expands the *shell glob* (0002*.patch) relative to its own cwd ($GITHUB_WORKSPACE) before git ever runs, so it never matches and the literal, unexpanded path fails to open. \`cd lance &&\` makes both the glob expansion and git's path resolution agree.
luhenry
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CI run 33791589510 built the wheel successfully but failed at test time: 12 tests in test_db.py/test_hybrid_query.py/test_permutation.py/test_query.py import lance (pylance) or polars lazily inside the test body rather than at module scope, so they collect fine (unlike the six files already excluded via --ignore) but fail at runtime since neither package has a riscv64 wheel. The 13th, test_package_metadata.py::test_pyo3_abi_matches_minimum_supported_python, reads python/Cargo.toml relative to its own file path; CIBW_TEST_SOURCES only stages pyproject.toml and python/tests, so it always FileNotFoundErrors regardless of platform - it's a repo-metadata sanity check with nothing to verify against an installed wheel, not a riscv64-specific failure. Deselected individually rather than dropping the whole files, since each file has other tests that already pass (726 passed, 39 skipped, 45 deselected in the same run).
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lancedb0.37.1Compiles LanceDB's Rust core (arrow, lance, datafusion, lance-index) into a pyo3 abi3 extension via maturin. Upstream publishes no riscv64 wheel.
Mirrors upstream's
pypi-publish.yml.Differs from upstream
build-statsig-python-core.ymllancedb-compatpackage andfp16kernelsfeature - no riscv64 equivalentMatrix: cp312 only - pyo3 carries
abi3-py310unconditionally, so one build covers every interpreter (asbuild-deltalake.ymldoes)Testing
run_tests/action.yml(-m "not slow and not s3_test")test_table.py,test_util.py,test_embeddings.py,test_namespace_integration.py,docs/test_guide_tables.py,docs/test_python.py- unconditionalimport polars/import lance(pylance), neither has a riscv64 wheelLicense: OK
Patches
0001-cargo-redirect-lance-core-lance-linalg-to-a-riscv64.patch- Inappropriate. Redirects lance-core/lance-linalg to a patched sibling checkout; reproduces on riscv64 only.0002-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.