[llvm] [mlir] [MLIR][Python] reland (narrower) type stub generation (PR #157930)

[Nikita Popov via llvm-commits]

nikic wrote:

Yes, distros always use system packages.

And as this is a requirement of the LLVM build itself (not just for downstream dependents), I'd have to build LLVM inside a venv -- is this what people working on MLIR do? That sounds like really bad ergonomics.

https://github.com/llvm/llvm-project/pull/157930