Cleaning up

flake.nix

@@ -4,10 +4,8 @@
   inputs = {
     nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/*";
 
-    lanzaboote = {
-      url = "github:nix-community/lanzaboote/v1.0.0";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
+    lanzaboote.url = "github:nix-community/lanzaboote/v1.0.0";
+    lanzaboote.inputs.nixpkgs.follows = "nixpkgs";
 
     apple-fonts.url = "github:Lyndeno/apple-fonts.nix";
     apple-fonts.inputs.nixpkgs.follows = "nixpkgs";
@@ -40,11 +38,14 @@
         system = "x86_64-linux";
         specialArgs = { inherit inputs; };
         modules = [
+          { nixpkgs.overlays = [ self.overlays.default ]; }
           ./machines/hermes
           ./users/pml.nix
         ];
       };
 
+      overlays.default = import ./overlays;
+
       devShells = forEachSupportedSystem (
         { pkgs, system }:
         {

machines/hermes/default.nix

@@ -1,4 +1,9 @@
-{ lib, pkgs, ... }:
+{
+  inputs,
+  lib,
+  pkgs,
+  ...
+}:
 
 {
   imports = [
@@ -9,6 +14,7 @@
     ./audio.nix
     ./bluetooth.nix
     ./networking.nix
+    ./hardware.nix
   ];
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
 
@@ -38,30 +44,10 @@
   # You can use https://search.nixos.org/ to find more packages (and options).
   environment.systemPackages = with pkgs; [
     wget
-    sbctl
     alacritty
     fuzzel
-    libva-utils
     firefox
-    (openrgb.overrideAttrs (old: {
-      src = pkgs.fetchFromGitLab {
-        owner = "CalcProgrammer1";
-        repo = "OpenRGB";
-        rev = "release_candidate_1.0rc2";
-        sha256 = "vdIA9i1ewcrfX5U7FkcRR+ISdH5uRi9fz9YU5IkPKJQ=";
-      };
-      patches = [
-        ./remove_systemd_service.patch
-      ];
-      postPatch = ''
-        patchShebangs scripts/build-udev-rules.sh
-        substituteInPlace scripts/build-udev-rules.sh \
-         --replace-fail /usr/bin/env "${pkgs.coreutils}/bin/env"
-      '';
-      version = "1.0rc2";
-    }))
     adwaita-icon-theme
-    i2c-tools
   ];
 
   fonts.fontconfig = {
@@ -75,7 +61,6 @@
       rgba = "rgb";
       lcdfilter = "default";
     };
-
     defaultFonts = {
       serif = [
         "SF Pro"
@@ -145,15 +130,10 @@
     polkitPolicyOwners = [ "pml" ];
   };
 
-  #services.hardware.openrgb.enable = true;
-  services.udev.packages = [ pkgs.openrgb ];
-  boot.kernelModules = [ "i2c-dev" ];
-  hardware.i2c.enable = true;
-
   environment.etc = {
     "1password/custom_allowed_browsers" = {
       text = ''
-        	  firefox
+        firefox
       '';
       mode = "0755";
     };

machines/hermes/gpu.nix

@@ -1,7 +1,5 @@
 {
   config,
-  inputs,
-  lib,
   pkgs,
   ...
 }:

machines/hermes/hardware.nix

@@ -0,0 +1,43 @@
+{ pkgs, ... }:
+let
+  no-rgb = pkgs.writeScriptBin "no-rgb" ''
+    #!/bin/sh
+    NUM_DEVICES=$(${pkgs.openrgb}/bin/openrgb --list-devices | grep -E '^[0-9]+: ' | wc -l)
+
+    for i in $(seq 0 $(($NUM_DEVICES - 1))); do
+      ${pkgs.openrgb}/bin/openrgb --device $i --mode static --color 000000
+    done
+  '';
+in
+{
+  environment.systemPackages = with pkgs; [
+    i2c-tools
+    lm_sensors
+  ];
+
+  boot.kernelModules = [ "i2c-dev" ];
+  boot.blacklistedKernelModules = [
+    #  The spd5118 driver is in conflict with openrgb by holding onto I2C adresses when using Kingston Fury DRAM.
+    # On boot, I need to access those i2c regions in other to poweroff the RGB lighting.
+    # Then, I manually enable the kernel module in any script.
+    # It's possible to let this module disabled, but I lose the ability to get temperature values for the DIMMs.
+    # https://gitlab.com/CalcProgrammer1/OpenRGB/-/merge_requests/2557
+    "spd5118"
+  ];
+
+  hardware.i2c.enable = true;
+
+  # OpenRGB
+  services.udev.packages = [ pkgs.openrgb ];
+  services.hardware.openrgb.enable = true;
+  systemd.services.no-rgb = {
+    description = "no-rgb";
+    serviceConfig = {
+      ExecStart = "${no-rgb}/bin/no-rgb";
+      Type = "oneshot";
+    };
+    after = [ "openrgb.service" ];
+    requires = [ "openrgb.service" ];
+    wantedBy = [ "multi-user.target" ];
+  };
+}

overlays/default.nix

@@ -0,0 +1,3 @@
+final: prev: {
+  openrgb = final.callPackage ./openrgb/package.nix { openrgb = prev.openrgb; };
+}

overlays/openrgb/default.nix

@@ -1,20 +0,0 @@
-final: prev: {
-  openrgb = prev.openrgb.overrideAttrs (old: {
-    src = final.fetchFromGitLab {
-      owner = "CalcProgrammer1";
-      repo = "OpenRGB";
-      rev = "release_candidate_1.0rc2";
-      sha256 = "vdIA9i1ewcrfX5U7FkcRR+ISdH5uRi9fz9YU5IkPKJQ=";
-    };
-    patches = [
-      ./remove_systemd_service.patch
-    ];
-    postPatch = ''
-      patchShebangs scripts/build-udev-rules.sh
-      substituteInPlace scripts/build-udev-rules.sh \
-       --replace-fail /usr/bin/env "${final.coreutils}/bin/env"
-    '';
-
-    version = "1.0rc2";
-  });
-}

overlays/openrgb/package.nix

@@ -0,0 +1,25 @@
+{
+  coreutils,
+  fetchFromGitLab,
+  openrgb,
+  ...
+}:
+
+openrgb.overrideAttrs (old: {
+  version = "1.0rc2";
+  src = fetchFromGitLab {
+    owner = "CalcProgrammer1";
+    repo = "OpenRGB";
+    rev = "release_candidate_1.0rc2";
+    sha256 = "vdIA9i1ewcrfX5U7FkcRR+ISdH5uRi9fz9YU5IkPKJQ=";
+  };
+  patches = [
+    ./remove_systemd_service.patch
+  ];
+  postPatch = ''
+    patchShebangs scripts/build-udev-rules.sh
+    substituteInPlace scripts/build-udev-rules.sh \
+     --replace-fail /usr/bin/env "${coreutils}/bin/env"
+  '';
+
+})