diff --git a/pkgs/development/libraries/ijs/default.nix b/pkgs/development/libraries/ijs/default.nix
index da0ae463e859..a08a653dc71f 100644
--- a/pkgs/development/libraries/ijs/default.nix
+++ b/pkgs/development/libraries/ijs/default.nix
@@ -1,14 +1,9 @@
-{ stdenv, fetchurl, fetchpatch, autoreconfHook }:
+{ stdenv, fetchurl, fetchpatch, autoreconfHook, ghostscript }:
 
-let version = "9.18";
-in
 stdenv.mkDerivation {
-  name = "ijs-${version}";
+  name = "ijs-${ghostscript.version}";
 
-  src = fetchurl {
-    url = "http://downloads.ghostscript.com/public/ghostscript-${version}.tar.bz2";
-    sha256 = "18ad90za28dxybajqwf3y3dld87cgkx1ljllmcnc7ysspfxzbnl3";
-  };
+  inherit (ghostscript) src;
 
   patches = [
     # http://bugs.ghostscript.com/show_bug.cgi?id=696246
diff --git a/pkgs/misc/ghostscript/default.nix b/pkgs/misc/ghostscript/default.nix
index 06ffc45cecf3..93e83a375a48 100644
--- a/pkgs/misc/ghostscript/default.nix
+++ b/pkgs/misc/ghostscript/default.nix
@@ -126,6 +126,8 @@ stdenv.mkDerivation rec {
     install_name_tool -change libgs.dylib.${version} $out/lib/libgs.dylib.${version} $out/bin/gs
   '';
 
+  passthru = { inherit version; };
+
   meta = {
     homepage = "http://www.ghostscript.com/";
     description = "PostScript interpreter (mainline version)";