feat: add calibre and game virtualization

hosts/titanium/game-emulation.nix

@@ -0,0 +1,57 @@
+{ config, lib, pkgs, ... }:
+let
+  retroarchWithCores = (
+    pkgs.retroarch.withCores (
+      cores: with cores; [
+        # Multi-Emulators
+        mame  # Atari / Nintendo / Sega / etc.
+
+        # Sega
+        genesis-plus-gx  # Sega Genesis
+
+        # Nintendo
+        mesen  # NES
+        bsnes  # Super Nintendo
+        mupen64plus # Nintendo 64 - Maybe simple64 some day.
+        dolphin  # GameCube
+        mgba  # GameBoy / Color / Advance
+        melonds  # Nintendo DS
+        citra  # Nintendo 3DS
+        
+
+        # Sony
+        swanstation  #duckstation  # PlayStation
+        beetle-psx-hw
+        pcsx2  # PlayStation 2 -- Is actually "LRPS2"
+        #rpcs3  # PlayStation 3
+        ppsspp  # PlayStation Portable
+
+        # Commodore
+        vice-x64  # C64
+      ]
+    )
+  );
+in
+{
+  environment.systemPackages = [
+    retroarchWithCores
+    #pkgs.emulationstation-de
+    pkgs.gnome-bluetooth
+  ];
+
+  hardware.xone.enable = true;  # Xbox Controller Driver
+  hardware.enableAllFirmware = true;
+  hardware.bluetooth = {
+    enable = true;
+    powerOnBoot = true;
+    settings = {
+      General = {
+        Experimental = true;
+        FastConnectable = true;
+      };
+      Policy = {
+        AutoEnable = true;
+      };
+    };
+  };
+}

modules/nixos/desktop/calibre.nix

@@ -0,0 +1,27 @@
+{ config, lib, pkgs, ... }:
+{
+  imports = [];
+
+  options = {
+    zw-calibre = {
+      enable = lib.mkEnableOption "Enable Calibre";
+    };
+  };
+
+  config = {
+    config.allowUnfreePredigate = pkg: builtins.elem (lib.getName pkg) [
+      "calibre"
+      "unrar"
+    ];
+
+    environment.systemPackages = with pkgs; [
+      (calibre.override {
+        unrarSupport = true;
+      })
+      unrar
+    ];
+
+    services.udisks2.enable = true;
+  };
+  # NOTE: Consider adding https://github.com/nydragon/calibre-plugins
+}