rofi-emoji: fix missing dependencies xdotools wtype

When trying to insert an emoji, and error notification raises:
`Could not find any tool to handle insertion. Please install xdotool or wtype.`

This commit add those missing dependencies.
To control which of these tools should be installed (one is for x11 and the
other for wayland) 2 derivations arguments have been created: `x11Support` and
`waylandSupport` defaulting to `true`.

pkgs/applications/misc/rofi-emoji/default.nix

@@ -6,6 +6,9 @@
 , autoreconfHook
 , pkg-config
 
+, waylandSupport ? true
+, x11Support ? true
+
 , cairo
 , glib
 , libnotify
@@ -13,6 +16,8 @@
 , wl-clipboard
 , xclip
 , xsel
+, xdotool
+, wtype
 }:
 
 stdenv.mkDerivation rec {
@@ -38,9 +43,12 @@ stdenv.mkDerivation rec {
   postFixup = ''
     chmod +x $out/share/rofi-emoji/clipboard-adapter.sh
     wrapProgram $out/share/rofi-emoji/clipboard-adapter.sh \
-      --prefix PATH ":" ${lib.makeBinPath [ libnotify wl-clipboard xclip xsel ]}
+     --prefix PATH ":" ${lib.makeBinPath ([ libnotify wl-clipboard xclip xsel ]
+       ++ lib.optionals waylandSupport [ wtype ]
+       ++ lib.optionals x11Support [ xdotool ])}
   '';
 
+
   nativeBuildInputs = [
     autoreconfHook
     pkg-config