Added the j2re for Linux. My installation of Eclipse runs on an j2re installed in Nix, so I guess it works pretty well. Of course other platforms should be added. This version will not be installed if the platform is not i686-linux.

svn path=/nixpkgs/trunk/; revision=714

pkgs/system/all-packages-generic.nix

@@ -220,6 +220,16 @@
     stdenv = stdenv;
   };
 
+  python = (import ../development/interpreters/python) {
+    fetchurl = fetchurl;
+    stdenv = stdenv;
+  };
+
+  j2re = (import ../development/interpreters/j2re) {
+    fetchurl = fetchurl;
+    stdenv = stdenv;
+  };
+
   pcre = (import ../development/libraries/pcre) {
     fetchurl = fetchurl;
     stdenv = stdenv;