rustup 1.28.2.1

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# rustup-pypi

Unofficial [rustup](https://rustup.rs/) distribution for PyPI.

If you are a rust(up) team member and interested in this package, please DM me.

## Internals

rustup is the Rust toolchain’s bootstrapping tool: You download rustup, and it installs Cargo, rustc, etc. in .cargo/bin. Rustup can install arbitrary Rust toolchain versions and can switch per invocation, e.g. cargo +nightly build transparently downloads and installs a nightly toolchain. It also reads a rust-toolchain.toml, so if you have Rustup installed, you can build projects that use arbitrary Rust versions.

All Rust toolchain binaries are internally symlinks to rustup[.exe]. rustup reads the name of the binary it was started as, selects the correct toolchain and launches the real e.g. cargo[.exe] inside the toolchain folder. On Windows, junctions are used if symlinks fail (https://github.com/rust-lang/rustup/blob/8b3aedcc599e9b6c6f3f1ece6a9a45dd4abc5ca4/src/utils/raw.rs#L121-L129).

Wheel cannot contain symlinks, and they don’t support post-install scripts. Instead, we’re using shim Python scripts that execv into the real rustup binary.

## Building

Due to the conflict between the package being both builder and been built, the current build process for all binaries is:

`bash (cd src && python -m rustup.build_rustup_wheels) `

Otherwise, building a single platform works the regular way:

`bash uv build `