Package request: python39-myst_parser

[William Hu]

Jeremy Drake wrote:
> LLVM's doc builds require the python module myst_parser. Right now we
> have to "pip3 install myst_parser" before building the package with
> cygport. In order to enable the llvm/clang/etc packages to build in an
> automated fashion, this module will need a cygwin package.

I took a quick look at what packaging myst_parser involves. It looks like the latest version (4.0.1) requires python >=3.10 (but Cygwin's latest stable python appears to be at 3.9. IIRC 3.12 still has some porting segfaults). However, an older version (3.0.1) builds with python >=3.8.  Does myst_parser 3.0.1 suffice for LLVM?