On Mon, Sep 7, 2009 at 12:31, Marco Maggesi<maggesi at math.unifi.it> wrote: > same nix expressions Have you checked the revision number of both NixPkgs and NixOS? -- Nicolas Pierron http://www.linkedin.com/in/nicolasbpierron Donald Knuth - I can't go to a restaurant because I keep looking at the fonts on the menu.