fix infinite recursion

lib/build-clan/default.nix

@@ -9,7 +9,6 @@
 {
   ## Inputs
   self ? null, # Reference to the current flake
-  directory ? null, # the directory containing the machines subdirectory. Optional: can be used if the machines is not in the root of the flake
   # allows to include machine-specific modules i.e. machines.${name} = { ... }
   # A map from arch to pkgs, if specified this nixpkgs will be only imported once for each system.
   # This improves performance, but all nipxkgs.* options will be ignored.
@@ -26,16 +25,9 @@ let
       lib
       nixpkgs
       clan-core
+      self
       ;
     inherit specialArgs;
-    self =
-      if self == null then
-        lib.warn "The buildClan function requires argument 'self' to be set to the current flake" {
-          inputs = { };
-        }
-      else
-        self;
-    directory = if directory == null then self else directory;
   };
 
   rest = builtins.removeAttrs attrs [ "specialArgs" ];

lib/build-clan/eval.nix

@@ -3,7 +3,6 @@
   nixpkgs,
   clan-core,
   self,
-  directory ? null,
   specialArgs ? { },
 }:
 # Returns a function that takes self, which should point to the directory of the flake
@@ -17,7 +16,6 @@ module:
     module
     {
       inherit specialArgs;
-      directory = lib.mkIf (directory != null) directory;
     }
   ];
 }).config

lib/build-clan/interface.nix

@@ -9,7 +9,7 @@ in
 {
   options = {
     self = lib.mkOption {
-      type = types.raw;
+      type = types.nullOr types.raw;
       default = self;
       readOnly = true;
       defaultText = "Reference to the current flake";

lib/build-clan/module.nix

@@ -1,3 +1,4 @@
+# NixOS module
 {
   config,
   clan-core,
@@ -43,8 +44,7 @@ let
   # { ${machineName} :: Config }
   serviceConfigs = (
     buildInventory {
-      inherit inventory;
-      inherit directory;
+      inherit inventory directory;
     }
   );