added dedicated focusrite scarlett, appimage modules, modified cloud

these new modules include only packages, no other configuration. maybe
later but none currently

modules/apps/appimage.nix

@@ -0,0 +1,19 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+with lib; let
+  cfg = config.appimage;
+in {
+  options.appimage = {
+    enable = mkEnableOption "AppImage support";
+  };
+  config = mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      appimageupdate
+      appimage-run
+    ];
+  };
+}

modules/machine/cloud/configuration.nix

@@ -21,11 +21,13 @@ in {
       inherit lib pkgs flatpakPackages;
     })
     ../../apps/gaming.nix
+    ../../apps/appimage.nix
     ../../graphics
     ../../pwrMgmt
     ../../networking/core.nix
     ../../sound/pipewire.nix
     ../../sound/shairport.nix
+    ../../sound/focusrite.nix
     ../../virtualization/podman.nix
     ../../virtualization/hardware.nix
   ];
@@ -34,9 +36,13 @@ in {
   nix.settings.experimental-features = ["nix-command" "flakes"];
 
   # Custom kernel/boot stuff
-  boot.kernelPackages = pkgs.linuxPackages_latest;
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = true;
+  boot = {
+    kernelPackages = pkgs.linuxPackages_latest;
+    loader = {
+      systemd-boot.enable = true;
+      efi.canTouchEfiVariables = true;
+    };
+  };
 
   # Enable Bluetooth if present
   hardware.bluetooth.enable = true;
@@ -63,21 +69,6 @@ in {
     wl-clip-persist
   ];
 
-  # Enable OpenSSH
-  services.openssh.enable = true;
-
-  # Enable keyring
-  services.gnome.gnome-keyring.enable = true;
-
-  # Enable GnuPG
-  programs.gnupg.agent = {
-    enable = true;
-    enableSSHSupport = true;
-  };
-
-  # Enable SUID wrappers (some programs need them)
-  programs.mtr.enable = true;
-
   # Enable Polkit
   security.polkit.enable = true;
 
@@ -145,14 +136,39 @@ in {
     networkManager.enable = true;
   };
 
+  programs = {
+    # Enable GnuPG
+    gnupg.agent = {
+      enable = true;
+      enableSSHSupport = true;
+    };
+
+    # Enable SUID wrappers (some programs need them)
+    mtr.enable = true;
+
     # Enable dconf
-  programs.dconf.enable = true;
+    dconf.enable = true;
+  };
 
   # Add username to groups "wheel" and "video" - more may be added here later
   users.users.${userName}.extraGroups = ["wheel" "video" "gamemode" "podman" "network"];
 
+  services = {
+    # Enable OpenSSH
+    openssh.enable = true;
+
+    # Enable keyring
+    gnome.gnome-keyring.enable = true;
+
     # Flatpak packages (see ../../apps/flatpak.nix)
-  services.flatpak.packages = flatpakPackages;
+    flatpak.packages = flatpakPackages;
+  };
+
+  # Focusrite Scarlett audio interface support (see ../../sound/focusrite.nix)
+  sound.hardware.focusrite.enable = true;
+
+  # AppImage support
+  appimage.enable = true;
 
   # XDG stuff
   xdg = {

modules/sound/focusrite.nix

@@ -0,0 +1,33 @@
+# Must be paired with the pipewire Nix module, this does nothing but install packages
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+with lib; let
+  cfg = config.sound.hardware.focusrite;
+in {
+  options.focusrite = {
+    enable = mkEnableOption "Focusrite audio interface support";
+    guiSupport = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Enable GUI support for Focusrite Scarlett audio interface (installs alsa-scarlett-gui)";
+    };
+  };
+  config = mkIf cfg.enable (mkMerge [
+    {
+      environment.systemPackages = with pkgs;
+        [
+          scarlett2
+          alsa-scarlett-gui
+        ]
+        ++ (
+          if cfg.guiSupport
+          then [pkgs.alsa-scarlett-gui]
+          else []
+        );
+    }
+  ]);
+}