feat(nix): Move all the gui stuff behind a bool

common/firefox.nix

@@ -4,7 +4,7 @@
   ...
 }: {
   programs.firefox = {
-    enable = device.isLinux;
+    enable = device.hasGui;
     profiles.default = {
       userChrome = let
       # TODO: Move to subflake

common/gui.nix

@@ -0,0 +1,33 @@
+{
+  pkgs,
+  device,
+  lib,
+  ...
+}:
+lib.attrsets.optionalAttrs device.hasGui {
+  home.packages = with pkgs;
+    []
+    ++ lib.optionals device.isLinux [
+      ferdium
+      psst
+      sony-headphones-client
+      abaddon
+      catppuccinThemes.gtk
+      catppuccinThemes.papirus-folders
+
+      gnome.seahorse
+      gnome.nautilus
+      nextcloud-client
+      gparted
+      polkit_gnome
+
+      mullvad-vpn
+      mullvad-closest
+      mullvad-browser
+      steam-run
+
+      webcord-vencord
+      spotify
+      wl-clipboard
+    ];
+}

common/home.nix

@@ -35,13 +35,15 @@ in {
   imports =
     [
       inputs.nix-index-database.hmModules.nix-index
-      ./tmux.nix
       ./wezterm.nix
+      ./kitty.nix
+      ./gui.nix
+
+      ./tmux.nix
       ./nvim.nix
       ./goread.nix
       ./ncmpcpp.nix
       ./zellij.nix
-      ./kitty.nix
       ../modules
     ]
     ++ lib.optionals device.isLinux [../linux];
@@ -95,32 +97,14 @@ in {
         (pkgs.mpv-unwrapped.override {sixelSupport = true;}) {})
     ]
     ++ lib.optionals device.isLinux [
-      ferdium
-      psst
-      sony-headphones-client
-      abaddon
       rr
-      catppuccinThemes.gtk
-      catppuccinThemes.papirus-folders
-      gnome.seahorse
-      gnome.nautilus
-      nextcloud-client
       sbctl
-      gparted
       gptfdisk
-      polkit_gnome
       dig
-      mullvad-vpn
-      mullvad-closest
-      mullvad-browser
-      steam-run
       usbutils
       handlr-regex
       handlr-xdg
-      webcord-vencord
-      spotify
       lsof
-      wl-clipboard
       ncpamixer
     ]
     ++ lib.optionals device.isMac [];

common/kitty.nix

@@ -1,6 +1,10 @@
-{pkgs, ...}: {
+{
+  pkgs,
+  device,
+  ...
+}: {
   programs.kitty = {
-    enable = true;
+    enable = device.hasGui;
     font = {
       name = "Hasklug Nerd Font Mono";
       size = 13;

common/wezterm.nix

@@ -1,6 +1,10 @@
-{pkgs, ...}: {
+{
+  pkgs,
+  device,
+  ...
+}: {
   programs.wezterm = {
-    enable = true;
+    enable = device.hasGui;
     extraConfig =
       /*
       lua