Feature request: *-pc-windows-gnullvm targets

[mati865]

Motivation

*-pc-windows-gnullvm is a new family of Tier 3 Rust targets (currently only x86_64 and aarch64) that need windows-rs support to be usable. Some discussions happened over #1846

Drawbacks

More maintenance work.

Rationale and alternatives

To match behaviour of current *-windows-msvc and *-windows-gnu targets new crates would have to be made, solely for *-windows-gnullvm.
Alternatively it could be implemented using raw-dylib feature once it stabilises (there is no any E.T.A.) putting any work on these targets on hold.

Additional context

List of remaining work:

• adding new target crates with tool to generate imports - I can do it soon
• testing on CI - this is complicated as there are no prebuilt binaries available yet, I plan to provide this target for CLANG64 subsystem at MSYS2 once it becomes usable (is able to build most popular crates - so it requires windows-rs support), until then I can prepare tarballs with those targets for use on the CI

[mati865]

Hello, are there plans to release windows-sys version with the new targets?
On crates.io 0.36 is the latest: https://crates.io/crates/windows-sys

[kennykerr]

Yes, I'm just waiting for one more fix from win32 metadata (microsoft/win32metadata#1276) and then I plan to release an update early this week.

[kennykerr]

windows-sys 0.42.0 has now been published!