We divert to the $out/share/virtualbox directory only if we have hardening enabled, so let's put the extension pack into $out/libexec/virtualbox instead if we're compiling without hardening. Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Nixpkgs is a collection of packages for Nix package manager. Nixpkgs also includes NixOS linux distribution source code.