fix: ahash breaking nightly

[McPatate]

When building helix in nightly, I get the following error:

error[E0635]: unknown feature `stdsimd`
  --> /home/mc/.cargo/registry/src/index.crates.io-6f17d22bba15001f/ahash-0.8.6/src/lib.rs:99:42
   |
99 | #![cfg_attr(feature = "stdsimd", feature(stdsimd))]
   |                                          ^^^^^^^

The issue appears to have been fixed in 0.8.7, cf tkaitchuck/aHash#200.

[pascalkuthe]

We can't update because the msrv is higher than ours

[pascalkuthe]

Did you build with --locked we specifically did not upgrade ahash in our lock file yet to work around this

[McPatate]

We can't update because the msrv is higher than ours

Ah, I updated to 0.8.8 which in fact did not work, but then when running cargo update -p [email protected] --precise 0.8.7 everything worked and I didn't get a MSRV error & everything compiles (haven't run the tests though).

[McPatate]

Tests at root, in helix-event & helix-core all pass with rust 1.70 and my nightly toolchain

[the-mikedavis]

Are you using rust 1.70.0? That's what we're locked at: https://github.com/helix-editor/helix/blob/master/rust-toolchain.toml

Also see #9142

[McPatate]

# rustup show
Default host: x86_64-unknown-linux-gnu
rustup home:  /hidden/.rustup

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu (default)
nightly-x86_64-unknown-linux-gnu
1.65.0-x86_64-unknown-linux-gnu
1.70.0-x86_64-unknown-linux-gnu

active toolchain
----------------

1.70.0-x86_64-unknown-linux-gnu (overridden by '/hidden/helix/rust-toolchain.toml')
rustc 1.70.0 (90c541806 2023-05-31)

[the-mikedavis]

Oh right, 0.8.7 only uses Rust 1.72.0 features for aarch64 builds, see #9294

0.8.8 fixes ahash's declared MSRV

[McPatate]

for aarch64

The joys of multi platform 😄

Sorry missed that detail!