Both fxhash and rustc-hash are in the dependency tree

[james7132]

naga uses rustc-hash and wgpu-hal uses fxhash. Both do the same thing, but both are being compiled separately. rustc-hash has hit 1.0, has been more recently updated, and is maintained by the rustlang devs themselves. It may be worth changing the fxhash dependency on wgpu-hal to rustc-hash.

[brody4hire]

Quoting a note I added to #6999 for the record on this update (apologies in advance for all the notes spam):

• Both fxhash and rustc-hash are in the dependency tree #3369 / PR Replace fxhash with rustc-hash #3502 - it looks to me like the old fxhash crate was some kind of copy of the hasher from rustc-hash. I think it was 100% 200% correct to drop use of the old fxhash in favor of rustc-hash. My one issue with rustc-hash is that it seems to contain both FxHasher, which can be used with hashbrown, and FxHashMap / FxHashSet typedefs which are hard-coded to using std::collections. So moving forward, we should use rustc_hash::FxHasher but not rustc_hash::FxHashMap or rustc_hash::FxHashSet.