add older pycrypto25

pkgs/development/python-modules/pycrypto/2.5.nix

@@ -0,0 +1,29 @@
+{ stdenv, fetchurl, python, buildPythonPackage, gmp }:
+
+buildPythonPackage rec {
+  name = "pycrypto-2.5";
+  namePrefix = "";
+
+  src = fetchurl {
+    url = "http://pypi.python.org/packages/source/p/pycrypto/${name}.tar.gz";
+    md5 = "783e45d4a1a309e03ab378b00f97b291";
+  };
+
+  buildInputs = [ python gmp ];
+
+  buildPhase =
+    ''
+      python ./setup.py build_ext --library-dirs=${gmp}/lib
+    '';
+
+#  installPhase =
+#    ''
+#      python ./setup.py install --prefix=$out
+#    '';
+
+  meta = {
+    homepage = "http://www.pycrypto.org/";
+    description = "Python Cryptography Toolkit";
+    platforms = stdenv.lib.platforms.gnu;
+  };
+}