The maintainer wrote a post about this topic: https://daniel.haxx.se/blog/2020/10/09/rust-in-curl-with-hyper https://daniel.haxx.se/blog/2020/10/09/rust-in-curl

The maintainer wrote a post about this topic: https://daniel.haxx.se/blog/2020/10/09/rust-in-curl-with-hyper https://daniel.haxx.se/blog/2020/10/09/rust-in-curl-with-hyp.... "Most places want to build from source" is not something he considered; there is a brief "for users against the C implementation on the platforms you care about".