diff --git a/pkgs/development/tools/parsing/asf-library/asf-library-1.0.nix b/pkgs/development/tools/parsing/asf-library/asf-library-1.0.nix
new file mode 100644
index 00000000000..d31e3c6e059
--- /dev/null
+++ b/pkgs/development/tools/parsing/asf-library/asf-library-1.0.nix
@@ -0,0 +1,10 @@
+{stdenv, fetchurl}:
+
+stdenv.mkDerivation {
+  name = "asf-library-1.0";
+  src = fetchurl {
+    url = http://www.cwi.nl/projects/MetaEnv/asf-library/asf-library-1.0.tar.gz;
+    md5 = "e531f78941e2d2dab1b87a56522e9fb5";
+  };
+}
+
diff --git a/pkgs/development/tools/parsing/sdf2/bundle-2.1.nix b/pkgs/development/tools/parsing/sdf2/bundle-2.1.nix
index ae5fa86f58e..f53665d7d08 100644
--- a/pkgs/development/tools/parsing/sdf2/bundle-2.1.nix
+++ b/pkgs/development/tools/parsing/sdf2/bundle-2.1.nix
@@ -33,4 +33,8 @@ rec {
   pgen = (import ../pgen/pgen-2.1.nix) {
     inherit fetchurl stdenv getopt aterm toolbuslib ptsupport sdfsupport asfsupport ascsupport errorsupport sglr;
   };
+
+  asflibrary = (import ../asf-library/asf-library-1.0.nix) {
+    inherit fetchurl stdenv;
+  };
 }