fix!: don't pass overlays to fup

BREAKING CHANGES: removes the `overlays` output passed to fup

Author: montchr

src/mkFlake/fup-adapter.nix

@@ -126,14 +126,6 @@ let
 
     devshellModules = flake-utils-plus.lib.exportModules config.devshell.exportedModules;
 
-    overlays = flake-utils-plus.lib.exportOverlays {
-      # since we can't detect overlays owned by self
-      # we have to filter out ones exported by the inputs
-      # optimally we would want a solution for NixOS/nix#4740
-      inherit (self) pkgs;
-      inherit inputs;
-    };
-
     outputsBuilder = channels:
       flake-utils-plus.lib.mergeAny
         (defaultOutputsBuilder channels)

src/mkFlake/options.nix

@@ -268,10 +268,7 @@ let
       type = with types; pathToOr overlaysType;
       default = [ ];
       description = escape [ "<" ">" ] ''
-        overlays to apply to this channel
-        these will get exported under the 'overlays' flake output
-        as <channel>/<name> and any overlay pulled from <inputs>
-        will be filtered out
+        Overlays to apply to this channel.
       '';
     };
   };

src/mkFlake/outputs-builder.nix

@@ -46,6 +46,7 @@ in
 
   inherit homeConfigurationsPortable;
 
+  # TODO: Should this really happen automatically?
   packages = flake-utils-plus.lib.exportPackages self.overlays channels;
 
   devShell =