* Set NIX_CONF_DIR in cronjobs. Otherwise the garbage collector won't see

the system nix.conf.

svn path=/nixos/trunk/; revision=23561

modules/services/scheduling/cron.nix

@@ -12,6 +12,7 @@ let
       SHELL=${pkgs.bash}/bin/bash
       PATH=${config.system.path}/bin:${config.system.path}/sbin
       MAILTO="${config.services.cron.mailto}"
+      NIX_CONF_DIR=/nix/etc/nix
       ${pkgs.lib.concatStrings (map (job: job + "\n") config.services.cron.systemCronJobs)}
     '';