diff --git a/pkgs/applications/misc/gramps/default.nix b/pkgs/applications/misc/gramps/default.nix
index b12b84d106dc..dd8cdef4df1a 100644
--- a/pkgs/applications/misc/gramps/default.nix
+++ b/pkgs/applications/misc/gramps/default.nix
@@ -1,7 +1,9 @@
 { stdenv, fetchFromGitHub, gtk3, pythonPackages, intltool, gnome3,
   pango, gobjectIntrospection, wrapGAppsHook,
 # Optional packages:
- enableOSM ? true, osm-gps-map
+ enableOSM ? true, osm-gps-map,
+ enableGraphviz ? true, graphviz,
+ enableGhostscript ? true, ghostscript
  }:
 
 let
@@ -14,6 +16,11 @@ in buildPythonApplication rec {
   buildInputs = [ intltool gtk3 gobjectIntrospection pango gnome3.gexiv2 ] 
     # Map support
     ++ stdenv.lib.optional enableOSM osm-gps-map
+    # Graphviz support
+    ++ stdenv.lib.optional enableGraphviz graphviz
+    # Ghostscript support
+    ++ stdenv.lib.optional enableGhostscript ghostscript
+    
   ;
 
   src = fetchFromGitHub {