* Create a /usr/bin/env symlink. This allows scripts from other

distributions with shebang lines such as

    #! /usr/bin/env python

  to work correctly.

svn path=/nixos/trunk/; revision=33011

modules/system/activation/activation-script.nix

@@ -126,7 +126,14 @@ in
 
     system.activationScripts.media =
       ''
-        mkdir -p /media
+        mkdir -m 0755 -p /media
+      '';
+
+    system.activationScripts.usrbinenv =
+      ''
+        mkdir -m 0755 -p /usr/bin
+        ln -sfn ${pkgs.coreutils}/bin/env /usr/bin/.env.tmp
+        mv /usr/bin/.env.tmp /usr/bin/env # atomically replace /usr/bin/env
       '';
 
   };