scx-git: init; scx: remove

[JohnRTitor]

🐟 What?

1. Remove scx to prevent conflicts.
2. Override the scx packages of Nixpkgs to provide a git version here

🎣 Why?

Scx is now available on Nixpkgs (stable version). So it makes sense to replace with the git version here.

🍥 Pending

• Override the rust packages
• Cook an update script for this, referencing nixpkgs, or modify the existing one.
• Publishing to news' channel.

After this is done, we will need to announce to the users asking to change their packages to scx_git.full. If they want to use the nixpkgs version, they should switch to scx.full.

🐳 Extras

I will recommend merging this after these PR reach unstable.

• https://nixpk.gs/pr-tracker.html?pr=352077 - rusty init
• https://nixpk.gs/pr-tracker.html?pr=352811 - csheds -> cscheds

[github-actions]

Thank you for contributing to nyx! Please run nix fmt on your code before submitting a pull request. Afterwards, please force push your changes.

[JohnRTitor]

❯  nix build .#scx_git.full .#scx_git.rustland .#scx_git.bpfland .#scx_git.cscheds .#scx_git.lavd .#scx_git.layered .#scx_git.rlfifo --print-out-paths 

/nix/store/ld2yx48yviiz0lpqac991l7xnsnmfgha-scx_full-unstable-20241101144355-9bba51a
/nix/store/xc9w481g4li7fwkyj317acgr462xfkdq-scx_rustland-unstable-20241101144355-9bba51a
/nix/store/xx68snlgqrspb3j298wc2hsqz3gkwkhx-scx_bpfland-unstable-20241101144355-9bba51a
/nix/store/q4l2qpd1nfyizhds9ax19805s85h2q0r-scx_csheds-unstable-20241101144355-9bba51a
/nix/store/ybs3n39sl9bw7swv7kg5nfp79kfvfg3k-scx_lavd-unstable-20241101144355-9bba51a
/nix/store/0lry6f5kknh16rfjmfbsgrbvdk522fp6-scx_layered-unstable-20241101144355-9bba51a
/nix/store/c1yqi50485ga1lj1in6gv06cy8jvxprm-scx_rlfifo-unstable-20241101144355-9bba51a

Everything above builds at the moment, and technically this is ready for merging. But I would like to wait until some merged PRs on Nixpkgs is available on unstable.

[JohnRTitor]

Work is pretty much done ^^ except for the above changes which depend on nixpkgs bump.

PRs to track:

• https://nixpk.gs/pr-tracker.html?pr=352077 - rusty init
• https://nixpk.gs/pr-tracker.html?pr=352811 - csheds -> cscheds

[JohnRTitor]

If this does not work I am done with fixing the CI.

I have no clue where the problem lies my gosh.

[github-actions]

Oops! Something went wrong while caching this PR! Check the logs for more information.

[JohnRTitor]

@PedroHLC can we get this reviewed :)

[DataEraserC]

Hello maintainers, just a reminder to inform users about updating their configurations to use scx_git.full instead of the default pkgs.scx. It's also recommended to set a correct default value that aligns with scx_git.full, as the previous default (pkgs.scx) may lead to unexpected issues.

[piyoki]

Hello maintainers, just a reminder to inform users about updating their configurations to use scx_git.full instead of the default pkgs.scx. It's also recommended to set a correct default value that aligns with scx_git.full, as the previous default (pkgs.scx) may lead to unexpected issues.

Exactly, here's what I am doing currently:

{ pkgs, ... }:

{
  environment.systemPackages = with pkgs; [ scx ];

  # --- New Configuration ---
  chaotic.scx = {
    enable = true;
    package = pkgs.scx;
    # one of "scx_bpfland", "scx_central", "scx_flatcg", "scx_lavd", "scx_layered", "scx_nest", "scx_pair", "scx_qmap", "scx_rlfifo", "scx_rustland", "scx_rusty", "scx_simple", "scx_userland"
    scheduler = "scx_bpfland";
  };

}

[JohnRTitor]

It's also recommended to set a correct default value that aligns with scx_git.full

Yup, PRs welcomed.
We need to change

nyx/modules/nixos/scx.nix

Line 14 in 09f0dcf

package = lib.mkPackageOption pkgs "scx" { };

to
https://github.com/NixOS/nixpkgs/blob/1f6ff249fe86a678965436f4d3c9c4a7e5601562/nixos/modules/services/scheduling/scx.nix#L23-L36

And we can remove the module entirely from here once the upstream PR is merged.