llvm-project

84a21485 - [MLIR][Python] use `FetchContent_Declare` for nanobind and remove pybind (#161230)

[MLIR][Python] use `FetchContent_Declare` for nanobind and remove pybind (#161230) Inspired by this comment https://github.com/llvm/llvm-project/pull/157930#issuecomment-3346634290 (and long-standing issues related to finding nanobind/pybind in the right place), this PR moves to using `FetchContent_Declare` to get the nanobind dependency. This is pretty standard (see e.g., [IREE](https://github.com/iree-org/iree/blob/cf60359b7443b0e92e15fb6ffc011525dc40e772/CMakeLists.txt#L842-L848)). This PR also removes pybind which has been deprecated for almost a year (https://github.com/llvm/llvm-project/pull/117922) and which isn't compatible (for whatever reason) with `FetchContent_Declare`. --------- Co-authored-by: Jacques Pienaar <jpienaar@google.com>