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Oct 13, 2026
…cu13 2.20.2 -> parked (CUDA-only)
crates/py-sugiyama/.cargo/config.toml sets [unstable] build-std, which needs rustlib's bundled std source. rust-toolchain.toml lists rust-src as a component, but maturin-action's own toolchain install step does not read that field, so the component was never fetched and cargo failed looking for library/Cargo.lock on the riscv64 toolchain.
maturin-action's working-directory already chdirs into crates/py-sugiyama inside the manylinux container, so before-script-linux's own `cd crates/py-sugiyama && rustup component add rust-src` was looking for a nonexistent nested crates/py-sugiyama directory. The cd failed and, via &&, silently skipped the rustup command, leaving rust-src missing for the build-std nightly toolchain and failing the cargo build with: error: ".../library/Cargo.lock" does not exist, unable to build with the standard library Drop the redundant cd so rustup component add rust-src actually runs.
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fast-sugiyama0.5.3Compiles the PyO3/maturin bindings around the pure-Rust
rust-sugiyamahierarchical graph layout crate into onecp311-abi3wheel. Upstream publishes no riscv64 wheel.Mirrors upstream's
python_release.yml:maturin build -i python3.11fromcrates/py-sugiyama, keeping its pinned nightly toolchain andbuild-stdcargo config.Differs from upstream
Matrix: single
cp311-abi3wheel, as upstream ships (pyo3abi3-py311).Testing
crates/py-sugiyama/testssuite plus its release smoke check, against the installed wheel on cp312.pytest-covdropped (coverage upload only).License: OK