Begin testing remote builds

hosts/jupiter/jovian/gnome/default.nix

@@ -0,0 +1,48 @@
+{ config, lib, pkgs, ... }:
+{
+  config = lib.mkIf config.jovian.steam.enable {
+    jovian.steam.desktopSession = "gnome";
+
+    services.desktopManager.gnome.enable = true;
+
+    environment.gnome.excludePackages = with pkgs; [
+      adwaita-icon-theme
+      baobab
+      epiphany
+      evince
+      file-roller
+      geary
+      gnome-calculator
+      gnome-calendar
+      gnome-characters
+      gnome-clocks
+      gnome-color-manager
+      gnome-connections
+      gnome-console
+      gnome-contacts
+      gnome-disk-utility
+      gnome-font-viewer
+      gnome-logs
+      gnome-maps
+      gnome-music
+      gnome-remote-desktop
+      gnome-shell-extensions
+      gnome-software
+      gnome-system-monitor
+      gnome-text-editor
+      gnome-tour
+      gnome-user-docs
+      gnome-weather
+      loupe
+      nautilus
+      orca
+      seahorse
+      simple-scan
+      snapshot
+      sushi
+      sysprof
+      totem
+      yelp
+    ];
+  };
+}