fixup nixos-module

nixos-modules/default.nix

@@ -19,7 +19,7 @@ let
 
   guestChildren = lib'.runDhallCommand "vbox.dhall" { } (''
     dhall > $out << END
-    let Genode = env:GENODE_DHALL
+    let Genode = env:DHALL_GENODE
     let toVbox = ${./dhall/vbox-guest.dhall}
     in [
   '' + builtins.concatStringsSep "," (lib.mapAttrsToList (vmName: cfg:
@@ -28,11 +28,11 @@ let
       vdiFile = "${toVdi config}/nixos.vdi";
     in ''
       { mapKey = "vbox-${vmName}"
-      , mapValule =
+      , mapValue =
           toVbox
             { vdiFilename = "${vdiFile}"
             , vdiUuid =
-                "\$(${pkgs.virtualbox}/bin/VBoxManage showmediuminfo ${vdiFile} | awk '/^UUID:/ {print \$2}')"
+                "$(${pkgs.virtualbox}/bin/VBoxManage showmediuminfo ${vdiFile} | awk '/^UUID:/ {print \$2}')"
             , memorySize = ${toString config.virtualbox.memorySize}
             , vmName = "${vmName}"
             }

nixos-modules/dhall/vbox-host.dhall

@@ -491,7 +491,8 @@ let rootInit =
                         (Some "nic_drv")
                     ]
                   }
-            , guests = toChild Init::{ children = guests } Init.Attributes::{=}
+            , guests =
+                Init.toChild Init::{ children = guests } Init.Attributes::{=}
             }
         }