Merge remote-tracking branch 'origin/master'

environment.nix

@@ -7,6 +7,9 @@
   # The NixOS release to be compatible with for stateful data such as databases.
   system.stateVersion = "16.03";
 
+  # On autorise les paquets non-libres
+  nixpkgs.config.allowUnfree = true;
+
   # List packages installed in system profile. To search by name, run:
   # $ nix-env -qaP | grep wget
   environment = {