Are there any public repos that use rust with PyO3 to build Pants #general

Are there any public repos that use rust with PyO3...

gentle-spoon-40388

07/06/2025, 6:01 PM

Are there any public repos that use rust with PyO3 to build a python extension module? I know pants itself does this but it's hard to separate what's needed to bootstrap vs. what would be part of a normal project. (I see

src/rust/engine/BUILD

builds the module but I can't find how it gets depended on, except for

bootstrap_code.sh

)

fast-nail-55400

07/06/2025, 7:00 PM

Maybe browse https://crates.io/crates/pyo3/reverse_dependencies? That will get you started at least with public crates making use of

pyo3.

fast-nail-55400

07/06/2025, 7:08 PM

Also have you asked an LLM? I gave Claude the following prompt and it listed out lots of candidate projects:

Please identify Rust software projects which (1) make use of the
pyo3
crate (https://crates.io/crates/pyo3), (2) which build Python extension modules, and (3) have publicly available source code.

gentle-spoon-40388

07/06/2025, 8:42 PM

I'm specifically looking for ones that use pants though, most (all?) crates above aren't using pants

gentle-spoon-40388

07/06/2025, 8:43 PM

(I have an existing codebase using pyo3 + maturin that I was looking to migrate)

gentle-spoon-40388

07/06/2025, 8:45 PM

I have since tried this github search for (

BUILD

files with "pyo3") but they're all for bazel (except for copies of the pants repo itself)

fast-nail-55400

07/06/2025, 9:11 PM

I’m not aware of any such projects besides Pants and Pants itself builds Rust code separately using Cargo.

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