can't compile on apple silicon M1

[thomvil]

Compilation fails because of crate ring-fork-dtool with

error[E0308]: mismatched types
   --> /Users/thomvil/.cargo/registry/src/github.com-1ecc6299db9ec823/ring-fork-dtool-0.16.13/src/cpu.rs:187:56
    |
187 |         pub fn available(&self, _: super::Features) -> bool {
    |                ---------                               ^^^^ expected `bool`, found `()`
    |                |
    |                implicitly returns `()` as its body has no tail or `return` expression

Could it be possible you need to explicitly support aarch64-apple-darwin? I think the original crate ring could already have a solution that would suffice? See this commit

[guoxbin]

Thanks for your information.
I will follow it.

[guoxbin]

Could you help check if the latest version fixed the compiling issue? @thomvil
Sorry for been late.

[thomvil]

From me sorry as well for the late response.

Installing from cargo with cargo install dtool still fails, but with a different error.

This time a linking error is thrown: error: linking with 'cc' failed: exit status: 1.

Trying to build a checked-out repo, adds this note

note: ld: in ~/dtool/target/debug/deps/libcrypto-d134af8d46f67537.rlib(util_helpers.o), archive member 'util_helpers.o' with length 3432 is not mach-o or llvm bitcode for architecture arm64

I would guess this is related to the rust-crypto-crate?