* Allow the time zone to be configured.

svn path=/nixos/trunk/; revision=7706

system/etc.nix

@@ -72,6 +72,7 @@ import ../helpers/make-etc.nix {
         src = ./etc/profile.sh;
         inherit systemPath wrapperDir;
         inherit (pkgs) kernel;
+        timeZone = config.get ["time" "timeZone"];
       };
       target = "profile";
     }

system/etc/profile.sh

@@ -2,6 +2,7 @@ export PATH=@wrapperDir@:@systemPath@/bin:@systemPath@/sbin
 export MODULE_DIR=@kernel@/lib/modules
 export NIX_CONF_DIR=/nix/etc/nix
 export PAGER=less
+export TZ=@timeZone@
 
 PROMPT_COLOR="1;31m"
 PS1="\n\[\033[$PROMPT_COLOR\][\u@\h:\w]$\[\033[0m\] "

system/options.nix

@@ -9,6 +9,14 @@
     description = "The name of the machine.";
   }
 
+
+  {
+    name = ["time" "timeZone"];
+    default = "CET";
+    example = "America/New_York";
+    description = "The time zone used when displaying times and dates.";
+  }
+
   
   {
     name = ["boot" "autoDetectRootDevice"];