glimpse: add graphviz as runtime dependency

Fixes https://github.com/NixOS/nixpkgs/issues/132405

See also:
https://gitlab.gnome.org/GNOME/gegl/-/issues/279
https://gitlab.gnome.org/GNOME/gimp/-/commit/f83fd22c4b8701ffc4ce14383e5e22756a4bce04

pkgs/applications/graphics/glimpse/default.nix

@@ -51,6 +51,7 @@
 , makeWrapper
 , autoreconfHook
 , gtk-doc
+, graphviz
 }:
 let
   python = python2.withPackages (pp: [ pp.pygtk ]);
@@ -154,7 +155,8 @@ stdenv.mkDerivation rec {
 
   postFixup = ''
     wrapProgram $out/bin/glimpse-${lib.versions.majorMinor version} \
-      --set GDK_PIXBUF_MODULE_FILE "$GDK_PIXBUF_MODULE_FILE"
+      --set GDK_PIXBUF_MODULE_FILE "$GDK_PIXBUF_MODULE_FILE" \
+      --prefix PATH ":" ${ lib.makeBinPath [ graphviz ] }
   '';
 
   passthru = rec {