Add org-protocol desktop entry

home-manager/default.nix

@@ -5,10 +5,7 @@
 
   home.stateVersion = "21.11";
 
-  imports = [ ./shell ./wayland ./password.nix ./email.nix ];
-
-  xdg.enable = true;
-  xdg.userDirs.enable = true;
+  imports = [ ./shell ./wayland ./xdg.nix ./password.nix ./email.nix ];
 
   programs.git = {
     enable = true;

home-manager/xdg.nix

@@ -0,0 +1,24 @@
+{ pkgs, ... }:
+let
+  org-protocol = pkgs.writeTextDir
+    "/share/applications/org-protocol.desktop"
+    ''
+      [Desktop Entry]
+      Name=Org-Protocol
+      Exec=emacsclient %u
+      Icon=emacs-icon
+      Type=Application
+      Terminal=false
+      MimeType=x-scheme-handler/org-protocol
+    '';
+in {
+  xdg.enable = true;
+  xdg.userDirs.enable = true;
+
+  # Org Roam Protocol
+  home.packages = [ org-protocol ];
+  xdg.mimeApps = {
+    enable = true;
+    defaultApplications."x-scheme-handler/org-protocol" = [ "org-protocol.desktop" ];
+  };
+}