[MLIR][Python] enable type stub auto-generation #155741
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Fix some things in `standalone` in order to unblock #155741.
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Fix some things in `standalone` in order to unblock llvm/llvm-project#155741.
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This PR turns on automatic type stub generation (rather than relying on hand-written/updated stubs). It uses nanobind's stubgen facility.
Note, the only catch is we need a quite recent version of that code - specifically we need a commit of nanobind that includes wjakob/nanobind@53dce4e. In conventional
requirements.txtfiles it's no issue to depend directly on a GitHub git commit (which I've done formlir/python/requirements.txt) but such dependencies don't supportpip hash(ironically). To workaround this I've temporarily updated.ci/monolithic-linux.shand.ci/monolithic-windows.shto explicitly install the appropriate commit of nanobind for our CI. When nanobind does its next PyPI release (which will contain the required53dce4ecommit), I'll updatemlir/python/requirements.txtand.ci/all_requirements.txtand restore the monolithic scripts.