Migrate config from dotfiles

modules/desktop/gaming/emulators.nix

@@ -0,0 +1,34 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.desktop.gaming.emulators;
+in {
+  options.modules.desktop.gaming.emulators = {
+    ds.enable       = mkBoolOpt false;
+    gb.enable       = mkBoolOpt false;
+    gba.enable      = mkBoolOpt false;
+    gamecube.enable = mkBoolOpt false;
+    ps2.enable      = mkBoolOpt false;
+    ps3.enable      = mkBoolOpt false;
+    psp.enable      = mkBoolOpt false;
+    snes.enable     = mkBoolOpt false;
+    wii.enable      = mkBoolOpt false;
+  };
+
+  config = {
+    user.packages = with pkgs; [
+      (mkIf cfg.ps2.enable pcsx2)
+      (mkIf cfg.ps3.enable rpcs3)
+      (mkIf cfg.psp.enable ppsspp)
+      (mkIf cfg.ds.enable desmume)
+      (mkIf (cfg.gba.enable ||
+             cfg.gb.enable  ||
+             cfg.snes.enable)
+        higan)
+      (mkIf (cfg.wii.enable ||
+             cfg.gamecube.enable)
+        dolphin-emu)
+    ];
+  };
+}

modules/desktop/gaming/lutris.nix

@@ -0,0 +1,24 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.desktop.gaming.lutris;
+in {
+  options.modules.desktop.gaming.lutris = {
+    enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
+      lutris
+      vulkan-loader
+      vulkan-tools
+    ];
+
+    hardware.opengl = {
+      enable = true;
+      driSupport = true;
+      driSupport32Bit = true;
+    };
+  };
+}

modules/desktop/gaming/steam.nix

@@ -0,0 +1,16 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.desktop.gaming.steam;
+in {
+  options.modules.desktop.gaming.steam = {
+    enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    programs.steam.enable = true;
+
+    systemd.extraConfig = "DefaultLimitNOFILE=1048576";
+  };
+}