Does not build on nightly due to transitive dependence on ahash

[ysimonson]

Bug Report

Version

tonic v0.11.0

Platform

ubuntu

Description

Tonic v0.11.0 will not build on nightly, due to a transitive dependency on ahash v0.7.8 which relies on feature(stdsimd). This feature was removed in early Feb nightly builds.

Dependency graph of a project that uses tonic v0.11:

$ cargo tree -i ahash          
ahash v0.7.8
└── hashbrown v0.12.3
    ├── indexmap v1.9.3
    │   └── tower v0.4.13
    │       ├── axum v0.6.20
    │       │   └── tonic v0.11.0
    │       │       ├── ...
    │       └── tonic v0.11.0 (*)
    └── internment v0.7.4
        └── ...

[ysimonson]

It looks like newer versions of ahash fix this issue: tkaitchuck/aHash#200 (comment)

[tottoto]

It seems to be caused by internment which enables hashbrown's ahash feature.

[ysimonson]

AIUI those are independent; ie in order to fix my project it would not suffice to remove internment, because tonic also pulls in the bad version of ahash.

[tottoto]

As tonic does not depend on ahash crate, tonic itself does not pull ahash.

[ysimonson]

Tonic depends on axum, which depends on tower, which depends on indexmap, which depends on hashbrown.

[tottoto]

Tonic depends on axum, which depends on tower, which depends on indexmap, which depends on hashbrown.

Yes, up to this point, it is as described in the dependency tree.

[LucioFranco]

I would recommend pinning your nightly version if you run into build issues, tonic does not guarantee building on nightly.