refactor: make the whole thing more generic

modules/nixos/hardware/audio.nix

@@ -0,0 +1,22 @@
+{ pkgs, lib, config, ... }:
+with lib;
+
+let cfg = config.hardware.audio.preset.pipewire;
+
+in {
+  options.hardware.audio.preset.pipewire = {
+    enable = mkEnableOption "Enable pipewire with sane defaults";
+  };
+
+  config = mkIf cfg.enable {
+    hardware.pulseaudio.enable = false;
+    security.rtkit.enable = true;
+    services.pipewire = {
+      enable = true;
+      alsa.enable = true;
+      alsa.support32Bit = true;
+      pulse.enable = true;
+      jack.enable = true;
+    };
+  };
+}

modules/nixos/hardware/cc1-thea

@@ -0,0 +1,39 @@
+xkb_symbols "cc1-thea"
+{
+  include "us(basic)"
+  include "level3(ralt_switch)"
+
+  key <AE11> {[minus, underscore, at]};
+  key <AE12> {[equal, question, ssharp]};
+  key <LatQ> {[q, Q, asterisk]};
+  key <LatW> {[w, W, 9]};
+  key <LatE> {[e, E, braceleft]};
+  key <LatR> {[r, R, 1]};
+  key <LatT> {[t, T, braceright]};
+  key <LatY> {[y, Y, bar]};
+  key <LatU> {[u, U, 5]};
+  key <LatI> {[i, I, exclam]};
+  key <LatO> {[o, O, 3]};
+  key <LatP> {[p, P, greater]};
+  key <LatA> {[a, A, 0]};
+  key <LatS> {[s, S, 4]};
+  key <LatD> {[d, D, parenright]};
+  key <LatF> {[f, F, 6]};
+  key <LatG> {[g, G, asciicircum]};
+  key <LatH> {[h, H, bracketright]};
+  key <LatJ> {[j, J, percent]};
+  key <LatK> {[k, K, 7]};
+  key <LatL> {[l, L, slash]};
+  key <AC10> {[semicolon, colon, dollar, EuroSign]};
+  key <AC11> {[apostrophe, quotedbl, ampersand]};
+  key <LatZ> {[z, Z, dead_diaeresis]};
+  key <LatX> {[x, X, plus]};
+  key <LatC> {[c, C, parenleft]};
+  key <LatV> {[v, V, less]};
+  key <LatB> {[b, B, 8]};
+  key <LatN> {[n, N, 2]};
+  key <LatM> {[m, M, bracketleft, mu]};
+  key <AB08> {[comma, numbersign, grave]};
+  key <AB09> {[period, asciitilde, backslash]};
+};
+  

modules/nixos/hardware/cc1.nix

@@ -0,0 +1,29 @@
+{ pkgs, lib, config, username, ... }:
+with lib;
+
+let cfg = config.hardware.cc1;
+
+in {
+  options.hardware.cc1 = {
+    enable = mkEnableOption "Enable CC1 optimizations";
+    layout = mkOption {
+      type = with lib.types; enum [ "cc1-thea" ];
+      default = "cc1-thea";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    # TODO: per-device layout?
+    console.useXkbConfig = true;
+    services.xserver.xkb = {
+      layout = cfg.layout;
+      extraLayouts.cc1-thea = {
+        description = "A CC1 optimized layout";
+        languages = [ "eng" "ger" ];
+        symbolsFile = ./${cfg.layout};
+      };
+    };
+
+    users.users.${username}.extraGroups = [ "dialout" ];
+  };
+}

modules/nixos/hardware/fv43u.nix

@@ -0,0 +1,17 @@
+{ pkgs, lib, config, username, ... }:
+with lib;
+
+let cfg = config.hardware.fv43u;
+
+in {
+  options.hardware.fv43u = {
+    enable =
+      mkEnableOption "Enable optimisations for the Gigabyte FV43U monitor";
+  };
+
+  config = mkIf cfg.enable {
+    fonts.fontconfig.subpixel.rgba = "bgr";
+    hardware.gbmonctl.enable = true;
+    boot.kernelParams = [ "video=3840x2160@144" ];
+  };
+}

modules/nixos/hardware/gbmonctl.nix

@@ -0,0 +1,23 @@
+{ pkgs, lib, config, ... }:
+with lib;
+
+let cfg = config.hardware.gbmonctl;
+
+in {
+  options.hardware.gbmonctl = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = mkDoc ''
+        Enables a CLI tool to change monitor settings over USB to the Gigabyte M32U
+
+        In theory any Gigabyte Monitor that uses a Realtek HID device (presumably the M28U also uses this) to control it over OSD sidekick should have the same protocol, but this is the only one I own.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = [ pkgs.gbmonctl ];
+    services.udev.packages = [ pkgs.gbmonctl ];
+  };
+}

modules/nixos/hardware/nvidia.nix

@@ -0,0 +1,51 @@
+{ pkgs, lib, config, ... }:
+with lib;
+
+let cfg = config.hardware.nvidia.preset.proprietary;
+
+in {
+  options.hardware.nvidia.preset.proprietary = {
+    enable = mkEnableOption
+      "Enable proprietary NVIDIA driver support with some sane defaults";
+  };
+
+  config = mkIf cfg.enable {
+    hardware.opengl = {
+      enable = true;
+      driSupport = true;
+      driSupport32Bit = true;
+      extraPackages = with pkgs; [ libvdpau-va-gl nvidia-vaapi-driver ];
+    };
+
+    services.xserver.videoDrivers = [ "nvidia" ];
+
+    boot.kernelParams = [ "nvidia_drm.fbdev=1" ];
+    boot.kernelModules =
+      [ "nvidia" "nvidia_modeset" "nvidia_uvm" "nvidia_drm" ];
+    boot.initrd.kernelModules =
+      [ "nvidia" "nvidia_modeset" "nvidia_uvm" "nvidia_drm" ];
+
+    hardware.nvidia = {
+      modesetting.enable = true;
+      # seems to cause crashes on sleep
+      powerManagement.enable = false;
+      open = true;
+      nvidiaSettings = false;
+      # no idea if this actually does anything...
+      nvidiaPersistenced = false;
+    };
+
+    environment = {
+      variables = {
+        VDPAU_DRIVER = "va_gl";
+        LIBVA_DRIVER_NAME = "nvidia";
+      };
+      systemPackages = with pkgs; [
+        glxinfo
+        nvtopPackages.nvidia
+        libva-utils
+        vulkan-tools
+      ];
+    };
+  };
+}

modules/nixos/hardware/virtual-camera.nix

@@ -0,0 +1,22 @@
+{ pkgs, lib, config, ... }:
+with lib;
+
+let cfg = config.hardware.virtual-camera;
+
+in {
+  options.hardware.virtual-camera = {
+    enable = mkEnableOption "Enable the virtual camera";
+  };
+
+  config = mkIf cfg.enable {
+    boot = {
+      # Virtual Camera/Mic
+      kernelModules = [ "v4l2loopback" "snd-aloop" "sg" ];
+      extraModulePackages = with config.boot.kernelPackages;
+        [ v4l2loopback.out ];
+      extraModprobeConfig = ''
+        options v4l2loopback exclusive_caps=1 card_label="Virtual Camera"
+      '';
+    };
+  };
+}