make outputs.directory useful for tftp-booting devices

basically, add some more symlinks to it

default.nix

@@ -37,11 +37,13 @@ let
       dd if=${uimage} of=$out/firmware.bin bs=128k conv=sync
       dd if=${squashfs} of=$out/firmware.bin bs=128k conv=sync,nocreat,notrunc oflag=append
     '';
-    directory = nixpkgs.pkgs.runCommand "both-kinds" {} ''
+    directory = nixpkgs.pkgs.runCommand "liminix" {} ''
       mkdir $out
       cd $out
       ln -s ${squashfs} squashfs
       ln -s ${kernel.vmlinux} vmlinux
+      ln -s ${manifest} manifest
+      ln -s ${uimage} uimage
     '';
     # this exists so that you can run "nix-store -q --tree" on it and find
     # out what's in the image, which is nice if it's unexpectedly huge

devices/gl-ar750.nix

@@ -83,7 +83,7 @@
       # "KEYS" = "y";
     };
   };
-  outputs.default = "combined-image";
+  outputs.default = "directory";
   boot = {
     loadAddress = "0x80060000";
     entryPoint  = "0x80060000";