Re: Rust-for-Linux Hydra CI

[Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>]

Hi Finn,

On Fri, Apr 16, 2021 at 10:44 AM Finn Behrens <me@kloenk.de> wrote:
>
> The nix-community gave me access to the nix-community hydra. Hydra is the CI tool written for nix builds, and so builds the rust-for-linux tree with nix. The hydra is checking the GitHub rust-for-linux/linux repo for new commits, and then builds these in a nix context (If we want to move to git.kernel.org, hydra can also check there for new commits).
>
> The latest builds can be seen here: https://hydra.nix-community.org/jobset/rust-for-linux/rust and is also uploaded to the nix cache at https://app.cachix.org/cache/nix-community (local nix versions can use those caches to substitute builds, e.g. rustc-nightly)
>
> We could also add vm tests via nixos, and documentation is not generated currently, but if we write nix derivations for that, hydra could also deliver those for download.

This is great! Thanks a lot for moving this forward!

> PS: I’m not sure If this will break if we rebase to a newer linux version, as nix needs a version to find some files.

If we rebase, does it affect negatively Hydra or some of the other
tools? i.e. would we be blocking some other project in some way? If it
is just us seeing a "red" state in the CI, then I think it is fine :)

Cheers,
Miguel