Move modules inside /nixos

modules/nixos/desktop/gaming/emulators.nix

@@ -0,0 +1,74 @@
+{ config, lib, pkgs, ... }:
+
+let cfg = config.modules.desktop.gaming.emulators;
+in {
+  options.modules.desktop.gaming.emulators = {
+    ds.enable       = lib.mkOption {
+      default = false;
+      example = true;
+    };
+    gb.enable       = lib.mkOption {
+      default = false;
+      example = true;
+    };
+    gba.enable      = lib.mkOption {
+      default = false;
+      example = true;
+    };
+    gamecube.enable = lib.mkOption {
+      default = false;
+      example = true;
+    };
+    ps1.enable      = lib.mkOption {
+      default = false;
+      example = true;
+    };
+    ps2.enable      = lib.mkOption {
+      default = false;
+      example = true;
+    };
+    ps3.enable      = lib.mkOption {
+      default = false;
+      example = true;
+    };
+    psp.enable      = lib.mkOption {
+      default = false;
+      example = true;
+    };
+    snes.enable     = lib.mkOption {
+      default = false;
+      example = true;
+    };
+    switch.enable   = lib.mkOption {
+      default = false;
+      example = true;
+    };
+    wii.enable      = lib.mkOption {
+      default = false;
+      example = true;
+    };
+    xbox.enable     = lib.mkOption {
+      default = false;
+      example = true;
+    };
+  };
+
+  config = {
+    user.packages = with pkgs; [
+      (lib.mkIf cfg.ps1.enable duckstation)
+      (lib.mkIf cfg.ps2.enable unstable.pcsx2)
+      (lib.mkIf cfg.ps3.enable rpcs3)
+      (lib.mkIf cfg.psp.enable unstable.ppsspp)
+      (lib.mkIf cfg.ds.enable desmume)
+      (lib.mkIf (cfg.gba.enable ||
+             cfg.gb.enable  ||
+             cfg.snes.enable)
+        higan)
+      (lib.mkIf cfg.switch.enable yuzuPackages.mainline)
+      (lib.mkIf (cfg.wii.enable ||
+             cfg.gamecube.enable)
+        dolphin-emu)
+      (lib.mkIf cfg.xbox.enable unstable.xemu)
+    ];
+  };
+}

modules/nixos/desktop/gaming/lutris.nix

@@ -0,0 +1,29 @@
+{ config, lib, pkgs, ... }:
+
+let cfg = config.modules.desktop.gaming.lutris;
+in {
+  options.modules.desktop.gaming.lutris = {
+    enable = lib.mkOption {
+      default = false;
+      example = true;
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      (lutris.override {
+        extraPkgs = pkgs: [
+          winePackages.staging
+          wine64Packages.staging
+        ];
+      })
+      vulkan-loader
+      vulkan-tools
+    ];
+
+    hardware.graphics = {
+      enable = true;
+      enable32Bit = true;
+    };
+  };
+}

modules/nixos/desktop/gaming/steam.nix

@@ -0,0 +1,17 @@
+{ config, lib, pkgs, ... }:
+
+let cfg = config.modules.desktop.gaming.steam;
+in {
+  options.modules.desktop.gaming.steam = {
+    enable = lib.mkOption {
+      default = false;
+      example = true;
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    programs.steam.enable = true;
+
+    systemd.extraConfig = "DefaultLimitNOFILE=1048576";
+  };
+}