[fpoling]

With Go basic stuff like url parsing or HTTPS support is written in Go and comes with the standard library. With Rust too many necessary things are just wrappers around C and C++ making cross-compilation and reproducible builds much harder to archive.

As for availability if CGO is ok, then calling C or C++ code from Go is not that hard. Also, there is always an option to just start C++ process if extra data copies are OK.

[afdbcreid]

Can you point out something that has a native Go library but not a native Rust counterpart?

The only thing I can think of is cryptography. We do have ring, but the default in rustls today is aws-lc-rs.

[physicsguy]

C APIs are much more annoying to wrap in Go than in Rust because of lack of enums (important) and unions (less important).

[hota_mazi]

Nonsense, Rust has plenty of native libraries for HTTP and JSON.