Added an option to easily allow everyone to use "at".

svn path=/nixos/trunk/; revision=12531

system/options.nix

@@ -650,6 +650,14 @@
           Whether to enable the `at' daemon, a command scheduler.
         '';
       };
+
+      allowEveryone = mkOption {
+        default = false;
+	description = ''
+	  Whether to make /var/spool/at{jobs,spool} writeable 
+	  by everyone (and sticky).
+	'';
+      };
     };
 
     locate = {

upstart-jobs/atd.nix

@@ -1,4 +1,4 @@
-{ at }:
+{ at, config }:
 
 let uid = (import ../system/ids.nix).uids.atd;
     gid = (import ../system/ids.nix).gids.atd;
@@ -44,6 +44,7 @@ start script
      fi
    done
    chmod 1770 "$spooldir" "$jobdir"
+   ${if config.allowEveryone then ''chmod a+rwxt "$spooldir" "$jobdir" '' else ""}
    if [ ! -f "$etcdir"/at.deny ]
    then
        touch "$etcdir"/at.deny && \

upstart-jobs/default.nix

@@ -173,6 +173,7 @@ let
   ++ optional config.services.atd.enable
     (import ../upstart-jobs/atd.nix {
       at = pkgs.at;
+      config = config.services.atd;
      })
 
   # DHCP client.