Re: [PATCH 3/3] rust: generate bindings via cbindgen

> On 2025-10-30 at 09:50:36, Patrick Steinhardt wrote:
> > For now that Rust version is 1.49, and that's enforced by our CI. The
> > reason for this specific version is that it's the target version for the
> > gcc-rs folks, so it may help currently-unsupported platforms to get
> > support earlier.
> 
> As I mentioned a couple of times, gcc-rs uses the standard library of
> Rust 1.49 since that's what it's targeting, and as a result it will not
> support any platforms that Rust 1.49 didn't support since there isn't
> standard library support for those platforms in that version.  It's like
> trying to use a 2009 version of glibc and expecting it to work on
> RISC-V, which was released in 2010—it simply won't.
> 
> That's why I was very clear at the Contributor's Summit that the message
> we must send to platforms that do not have Rust is that they need to
> port LLVM and target Rust that way, since that is the surest path to
> success and to being able to get the necessary standard library changes
> for things to work properly.  gcc-rs may be a viable solution in the
> future, but it is not now, and absent substantial advances and an
> order-of-magnitude faster development, it is unlikely to meet that
> standard in time for Git 3.0.