themes/a-happy-gnome: update XDG prefs and add kitty

modules/nixos/themes/a-happy-gnome/config/dconf/desktop.conf

@@ -36,3 +36,7 @@ enabled=false
 
 [org/gnome/desktop/wm/preferences]
 workspace-names=['Web', 'Dev', 'Notes', 'Graphics', 'Audio']
+
+# Application configs.
+[re/sonny/Junction]
+show-app-names=true

modules/nixos/themes/a-happy-gnome/config/dconf/keybindings.conf

@@ -44,13 +44,13 @@ toggle-message-tray=['<Super>v']
 # Bringing my old habits back when I use standalone window managers.
 [org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom0]
 binding='<Super>Return'
-command='alacritty'
+command='kitty'
 name='Terminal'
 
 # The equivalent to the newspaper in the morning.
 [org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom1]
 binding='<Shift><Super>r'
-command='nix run nixpkgs#alacritty -- -e nix run nixpkgs#newsboat'
+command='nix run nixpkgs#kitty -- -e nix run nixpkgs#newsboat'
 name='News aggregator'
 
 # We don't want to restore them shortcuts.

modules/nixos/themes/a-happy-gnome/default.nix

@@ -57,7 +57,24 @@ in
       };
     };
 
+    xdg.mime = {
+      enable = true;
+      defaultApplications = {
+        # Default application for web browser.
+        "text/html" = "re.sonny.Junction.desktop";
+
+        # Default handler for all files. Not all applications will
+        # respect it, though.
+        "x-scheme-handler/file" = "re.sonny.Junction.desktop";
+
+        # Default handler for directories.
+        "inode/directory" = "re.sonny.Junction.desktop";
+      };
+    };
+
     environment.systemPackages = with pkgs; [
+      # The preferred terminal.
+      kitty
 
       # The application menu.
       junction
@@ -90,10 +107,6 @@ in
 
       # GNOME search providers.
       gnome-search-provider-recoll
-
-      gnome-search-provider-browser-tabs.gnome-shell-extension
-      gnome-search-provider-browser-tabs.web-extension
-      gnome-search-provider-browser-tabs.connector
     ];
   };
 }