diff --git a/pkgs/development/libraries/gmp/default.nix b/pkgs/development/libraries/gmp/default.nix
new file mode 100644
index 000000000000..a370014132cf
--- /dev/null
+++ b/pkgs/development/libraries/gmp/default.nix
@@ -0,0 +1,11 @@
+{stdenv, fetchurl, m4}:
+
+stdenv.mkDerivation {
+  name = "gmp-4.2.1";
+  src = fetchurl {
+    url = http://ftp.sunet.se/pub/gnu/gmp/gmp-4.2.1.tar.bz2;
+    md5 = "091c56e0e1cca6b09b17b69d47ef18e3";
+  };
+  buildInputs = [m4];
+  doCheck = true;
+}
diff --git a/pkgs/development/libraries/haskell/wxHaskell/default.nix b/pkgs/development/libraries/haskell/wxHaskell/default.nix
new file mode 100644
index 000000000000..fc523e0ae3b4
--- /dev/null
+++ b/pkgs/development/libraries/haskell/wxHaskell/default.nix
@@ -0,0 +1,13 @@
+{stdenv, fetchurl, unzip, ghc, wxGTK}:
+
+stdenv.mkDerivation {
+  name = "wxHaskell-0.9.4-1";
+  src = fetchurl {
+    url = http://mesh.dl.sourceforge.net/sourceforge/wxhaskell/wxhaskell-src-0.9.4-1.zip;
+    md5 = "69c3876e1c8ed810cef9db7ed442cb89";
+  };
+  #builder = ./builder.sh;
+  buildInputs = [unzip ghc wxGTK];
+  installCommand = "make install-files";
+#  inherit ghc;
+}
diff --git a/pkgs/development/python-modules/pycrypto/default.nix b/pkgs/development/python-modules/pycrypto/default.nix
index ac98ea08c433..67413fa93708 100644
--- a/pkgs/development/python-modules/pycrypto/default.nix
+++ b/pkgs/development/python-modules/pycrypto/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl, python}:
+{stdenv, fetchurl, python, gmp}:
 
 stdenv.mkDerivation {
   name = "pycrypto-2.0.1";
@@ -6,7 +6,10 @@ stdenv.mkDerivation {
     url = http://www.amk.ca/files/python/crypto/pycrypto-2.0.1.tar.gz;
     md5 = "4d5674f3898a573691ffb335e8d749cd";
   };
-  buildInputs = [python];
+  buildInputs = [python gmp];
   buildPhase = "true";
-  installPhase = "python ./setup.py install --prefix=$out";
+  installPhase = "
+    python ./setup.py build_ext --library-dirs=${gmp}/lib
+    python ./setup.py install --prefix=$out
+  ";
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index b1b038b47c6d..b9dfc29f0112 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -682,10 +682,9 @@ rec {
   });
 
   ghc = import ../development/compilers/ghc {
-    inherit fetchurl stdenv perl ncurses readline;
+    inherit fetchurl stdenv perl ncurses readline m4;
     gcc = stdenv.gcc;
     ghc = ghcboot;
-    m4 = gnum4;
   };
 
   ghcboot = import ../development/compilers/ghc/boot.nix {
@@ -954,13 +953,11 @@ rec {
   autoconf = autoconf259;
 
   autoconf259 = import ../development/tools/misc/autoconf {
-    inherit fetchurl stdenv perl;
-    m4 = gnum4;
+    inherit fetchurl stdenv perl m4;
   };
 
   autoconf260 = import ../development/tools/misc/autoconf-2.60 {
-    inherit fetchurl stdenv perl;
-    m4 = gnum4;
+    inherit fetchurl stdenv perl m4;
   };
 
   automake = automake19x;
@@ -996,13 +993,11 @@ rec {
   bison = bison1875;
 
   bison1875 = import ../development/tools/parsing/bison/bison-1.875.nix {
-    inherit fetchurl stdenv;
-    m4 = gnum4;
+    inherit fetchurl stdenv m4;
   };
 
   bison23 = import ../development/tools/parsing/bison/bison-2.3.nix {
-    inherit fetchurl stdenv;
-    m4 = gnum4;
+    inherit fetchurl stdenv m4;
   };
 
   ctags = import ../development/tools/misc/ctags {
@@ -1012,14 +1007,15 @@ rec {
   flex = flex254a;
 
   flex2533 = import ../development/tools/parsing/flex/flex-2.5.33.nix {
-    inherit fetchurl stdenv yacc;
-    m4 = gnum4;
+    inherit fetchurl stdenv yacc m4;
   };
 
   flex254a = import ../development/tools/parsing/flex/flex-2.5.4a.nix {
     inherit fetchurl stdenv yacc;
   };
 
+  m4 = gnum4;
+
   gnum4 = import ../development/tools/misc/gnum4 {
     inherit fetchurl stdenv;
   };
@@ -1060,8 +1056,7 @@ rec {
   };
 
   libtool = import ../development/tools/misc/libtool {
-    inherit fetchurl stdenv perl;
-    m4 = gnum4;
+    inherit fetchurl stdenv perl m4;
   };
 
   mk = import ../development/tools/build-managers/mk {
@@ -1192,8 +1187,7 @@ rec {
   };
 
   beecrypt = import ../development/libraries/beecrypt {
-    inherit fetchurl stdenv;
-    m4 = gnum4;
+    inherit fetchurl stdenv m4;
   };
 
   boehmgc = import ../development/libraries/boehm-gc {
@@ -1287,6 +1281,10 @@ rec {
     inherit (gtkLibs) glib;
   };
 
+  gmp = import ../development/libraries/gmp {
+    inherit fetchurl stdenv m4;
+  };
+
   gnet = import ../development/libraries/gnet {
     inherit fetchurl stdenv pkgconfig;
     inherit (gtkLibs) glib;
@@ -1789,6 +1787,17 @@ rec {
     inherit stdenv fetchurl ghc;
   };
 
+  wxHaskell = import ../development/libraries/haskell/wxHaskell {
+    inherit fetchurl unzip ghc;
+    stdenv = stdenvNew;
+    wxGTK = import ../development/libraries/wxGTK-2.6 {
+      inherit fetchurl stdenv pkgconfig;
+      inherit (gtkLibs) gtk;
+      inherit (xlibs) libXinerama;
+      unicode = false; # not supported by GHC/wxHaskell yet
+    };
+  };
+
 
   ### DEVELOPMENT / PERL MODULES
 
@@ -1958,7 +1967,7 @@ rec {
 
 
   pycrypto = import ../development/python-modules/pycrypto {
-    inherit fetchurl stdenv python;
+    inherit fetchurl stdenv python gmp;
   };
 
   pygtk = import ../development/python-modules/pygtk {
@@ -2954,8 +2963,7 @@ rec {
   };
 
   uml = import ../misc/uml {
-    inherit fetchurl stdenv perl modutils;
-    m4 = gnum4;
+    inherit fetchurl stdenv perl modutils m4;
     gcc = gcc33;
   };