Python cryptography, Rust, and Gentoo

Rust has a permissively licensed frontend (and backends). Duplicating that code seems like a substantial waste, compared to collaborating on the existing implementation.

There were many competing proprietary C compilers. GCC provided a FOSS C compiler and compiler infrastructure, and there wasn't a strong need for a *second* such infrastructure until LLVM came along with substantially different design goals (permissive license and easy extension).

I don't think there's value in a second frontend, and I think it would cause ecosystem fragmentation.