diff --git a/default.nix b/default.nix
index 6988e879..b8e48ff0 100644
--- a/default.nix
+++ b/default.nix
@@ -6,13 +6,43 @@
 self:
 rec { 
       coroutine-object = ghc.callPackage ./coroutine-object {};
+
       xournal-types    = ghc.callPackage ./xournal-types {};
-      xournal-parser   = ghc.callPackage ./xournal-parser { inherit xournal-types; };
+
+      xournal-parser   = ghc.callPackage ./xournal-parser { 
+                           xournal-types = self.xournal-types; 
+                         };
+
       hoodle-types     = ghc.callPackage ./hoodle-types {};
-      hoodle-builder   = ghc.callPackage ./hoodle-builder { inherit hoodle-types; };
-      hoodle-parser    = ghc.callPackage ./hoodle-parser { inherit hoodle-types xournal-types; };
-      hoodle-render    = ghc.callPackage ./hoodle-render { inherit hoodle-types; };
-      hoodle-publish   = ghc.callPackage ./hoodle-publish { inherit hoodle-types hoodle-render; };
-      hoodle-core      = ghc.callPackage ./hoodle-core { inherit hoodle-types hoodle-parser hoodle-builder hoodle-render hoodle-publish xournal-parser; };
-      hoodle           = ghc.callPackage ./hoodle { inherit hoodle-core; };
+
+      hoodle-builder   = ghc.callPackage ./hoodle-builder { 
+                           hoodle-types = self.hoodle-types; 
+                         };
+
+      hoodle-parser    = ghc.callPackage ./hoodle-parser { 
+                           hoodle-types = self.hoodle-types; 
+                           xournal-types = self.xournal-types; 
+                         };
+
+      hoodle-render    = ghc.callPackage ./hoodle-render { 
+                           hoodle-types = self.hoodle-types; 
+                         };
+
+      hoodle-publish   = ghc.callPackage ./hoodle-publish { 
+                           hoodle-types = self.hoodle-types; 
+                           hoodle-render = self.hoodle-render; 
+                         };
+
+      hoodle-core      = ghc.callPackage ./hoodle-core { 
+                           coroutine-object = self.coroutine-object;
+                           hoodle-types = self.hoodle-types; 
+                           hoodle-parser = self.hoodle-parser; 
+                           hoodle-builder = self.hoodle-builder;
+                           hoodle-render = self.hoodle-render; 
+                           hoodle-publish = self.hoodle-publish;
+                           xournal-parser = self.xournal-parser; 
+                         };
+      hoodle           = ghc.callPackage ./hoodle { 
+                           hoodle-core = self.hoodle-core; 
+                         };
 }
diff --git a/release.nix b/release.nix
index bd81cdcf..1ae0d34e 100644
--- a/release.nix
+++ b/release.nix
@@ -1,141 +1,21 @@
 { pkgs ? import <nixpkgs> {} }:
 
-let fix = f: let x = f x // { __unfix__ = f; }; in x;
-
-    ghc = pkgs.haskell-ng.packages.ghc7101;
-    ghcjs = pkgs.haskell-ng.packages.ghcjs;
-    stdenv = pkgs.stdenv;
-    
-    hoodlepkgs = import ./default.nix { inherit stdenv ghc; };
-in fix hoodlepkgs
-
-#     #pkgs = import <nixpkgs> {};
-#     haskellngPackages = pkgs.haskellngPackages;
-#     stdenv = pkgs.stdenv;
-#     jobs = rec {
-#       popplerNew =
-#         haskellngPackages.callPackage ({mkDerivation}:
-# 	  mkDerivation {
-#             pname = "poppler";
-# 	    version = "0.13.1";
-# 	    src = pkgs.fetchgit { url = "https://github.com/wavewave/poppler.git";
-# 				  rev = "05123d9f054a353ea0f06a3179f3f2c773594079";
-# 				  sha256 = "6e142219c94c9375f54c55825ab952fa0c1d4358b2706fad63f18885ebf77a40"; 
-# 				};
-# 	    buildDepends = with haskellngPackages; [
-# 	      array base bytestring cairo containers glib gtk mtl
-# 	    ];
-# 	    buildTools = with haskellngPackages; [ gtk2hs-buildtools ];
-# 	    pkgconfigDepends = [ pkgs.gtk pkgs.glib pkgs.gdk_pixbuf pkgs.pango pkgs.poppler ];
-# 	    homepage = "http://projects.haskell.org/gtk2hs";
-# 	    description = "Binding to the Poppler";
-# 	    license = stdenv.lib.licenses.gpl2;			      
-# 	  }) {};
-#       coroutine-object = 
-#         haskellngPackages.callPackage ({mkDerivation}: 
-#           mkDerivation {
-#             pname = "coroutine-object";
-#             version = "0.3";
-#             src = ./coroutine-object;
-#             license = stdenv.lib.licenses.bsd3;
-#             buildDepends = with haskellngPackages; [ cereal containers either lens mtl safecopy transformers transformers-free uuid ];
-#         }) {};
-
-#       hoodle-types = 
-#         haskellngPackages.callPackage ({mkDerivation}: 
-#           mkDerivation {
-#             pname = "hoodle-types";
-#             version = "0.3.999";
-#             src = ./hoodle-types;
-#             license = stdenv.lib.licenses.bsd3;
-#             buildDepends = with haskellngPackages; [ aeson lens cereal mtl strict text uuid ];
-#         }) {};
-#       hoodle-parser = 
-#         haskellngPackages.callPackage ({mkDerivation}: 
-#           mkDerivation {
-#             pname = "hoodle-parser";
-#             version = "0.3.999";
-#             src = ./hoodle-parser;
-#             license = stdenv.lib.licenses.bsd3;
-#             buildDepends = with haskellngPackages; [ attoparsec either directory hoodle-types lens cereal mtl strict text xournal-types ];
-#         }) {};
-#       xournal-types = 
-#         haskellngPackages.callPackage ({mkDerivation}: 
-#           mkDerivation {
-#             pname = "xournal-types";
-#             version = "0.5.1";
-#             src = ./xournal-types;
-#             license = stdenv.lib.licenses.bsd3;
-#             buildDepends = with haskellngPackages; [ cereal lens strict TypeCompose ];
-#         }) {};
-#       xournal-parser = 
-#         haskellngPackages.callPackage ({mkDerivation}: 
-#           mkDerivation {
-#             pname = "xournal-parser";
-#             version = "0.5.1";
-#             src = ./xournal-parser;
-#             license = stdenv.lib.licenses.bsd3;
-#             buildDepends = with haskellngPackages; [ attoparsec attoparsec-conduit cereal conduit conduit-extra containers either
-# 	                                             exceptions directory lens mtl strict text transformers xml-conduit xml-types
-# 						     xournal-types
-# 						     zlib-conduit ];
-#         }) {};	
-#       hoodle-builder = 
-#         haskellngPackages.callPackage ({mkDerivation}: 
-#           mkDerivation {
-#             pname = "hoodle-builder";
-#             version = "0.3.999";
-#             src = ./hoodle-builder;
-#             license = stdenv.lib.licenses.bsd3;
-#             buildDepends = with haskellngPackages; [ blaze-builder double-conversion hoodle-types lens strict text ];
-#         }) {};
-#       hoodle-render = 
-#         haskellngPackages.callPackage ({mkDerivation}: 
-#           mkDerivation {
-#             pname = "hoodle-render";
-#             version = "0.5.0";
-#             src = ./hoodle-render;
-#             license = stdenv.lib.licenses.bsd3;
-#             buildDepends = with haskellngPackages; [ base64-bytestring cairo containers directory filepath gd hashable hoodle-types 
-#                                                      lens monad-loops mtl popplerNew stm strict svgcairo time transformers unix unordered-containers 
-#                                                      uuid ];
-#         }) {};
-#       hoodle-publish = 
-#         haskellngPackages.callPackage ({mkDerivation}: 
-#           mkDerivation {
-#             pname = "hoodle-publish";
-#             version = "0.2.0";
-#             src = ./hoodle-publish;
-#             license = stdenv.lib.licenses.bsd3;
-#             buildDepends = with haskellngPackages; [ attoparsec cairo cmdargs containers directory directory-tree filepath 
-#                                                      gtk hoodle-parser hoodle-render hoodle-types 
-#                                                      HTTP io-streams lens mtl network-uri pdf-toolbox-core pdf-toolbox-document 
-#                                                      process transformers unordered-containers uuid ];
-#         }) {};
-#       hoodle-core = 
-#         haskellngPackages.callPackage ({mkDerivation}: 
-#           mkDerivation {
-#             pname = "hoodle-core";
-#             version = "0.15.0";
-#             src = ./hoodle-core;
-#             license = stdenv.lib.licenses.bsd3;
-#             buildDepends = with haskellngPackages; [ aeson aeson-pretty array attoparsec base64-bytestring binary cairo 
-#                                                      case-insensitive cereal containers configurator coroutine-object Diff 
-#                                                      directory either errors filepath fsnotify gd handa-gdata 
-#                                                      hoodle-builder hoodle-parser hoodle-publish hoodle-render hoodle-types
-#                                                      http-types lens monad-loops mtl network-uri old-locale pango popplerNew process 
-#                                                      pureMD5 stm strict svgcairo system-filepath template-haskell text time 
-#                                                      transformers transformers-free unordered-containers uuid vector websockets 
-#                                                      xournal-parser ];
-#         }) {};
-#       hoodle = 
-#         haskellngPackages.callPackage ({mkDerivation}: 
-#           mkDerivation {
-#             pname = "hoodle";
-#             version = "0.4.0";
-#             src = ./hoodle;
-#             license = stdenv.lib.licenses.bsd3;
-#             buildDepends = with haskellngPackages; [ cmdargs configurator containers directory dyre filepath  hoodle-core mtl ];
-#         }) {};
-#     };
-# in jobs
\ No newline at end of file
+let newghcpkgs = pkgs.callPackage <nixpkgs/pkgs/development/haskell-modules> {
+      ghc = pkgs.haskell.compiler.ghc7101;
+      packageSetConfig = pkgs.callPackage <nixpkgs/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix> {};
+      overrides = self: super: rec { 
+        coroutine-object = self.callPackage ./coroutine-object {};
+        xournal-types = self.callPackage ./xournal-types {};
+        xournal-parser = self.callPackage ./xournal-parser { inherit xournal-types; };
+        hoodle-types = self.callPackage ./hoodle-types {};
+        hoodle-builder = self.callPackage ./hoodle-builder { inherit hoodle-types; };
+        hoodle-parser = self.callPackage ./hoodle-parser { inherit hoodle-types xournal-types; };
+        hoodle-render = self.callPackage ./hoodle-render { inherit hoodle-types; };
+        hoodle-publish = self.callPackage ./hoodle-publish { inherit hoodle-types hoodle-render; };
+        hoodle-core = self.callPackage ./hoodle-core { inherit coroutine-object hoodle-types hoodle-parser hoodle-builder hoodle-render hoodle-publish xournal-parser; };
+        hoodle = self.callPackage ./hoodle { inherit hoodle-core; };
+      };
+    };
+in with newghcpkgs; { 
+     inherit coroutine-object xournal-types xournal-parser hoodle-types hoodle-builder hoodle-parser hoodle-render hoodle-publish hoodle-core hoodle;
+   }