move nixos-facter imports to clanCore

lib/build-clan/module.nix

@@ -63,37 +63,15 @@ let
     nixpkgs.lib.nixosSystem {
       modules =
         let
-          settings = machineSettings name;
-          facterJson = "${directory}/machines/${name}/facter.json";
           hwConfig = "${directory}/machines/${name}/hardware-configuration.nix";
-
-          facterModules = lib.optionals (builtins.pathExists facterJson) [
-            { config.facter.reportPath = facterJson; }
-          ];
         in
-        (machineImports settings)
-        ++ facterModules
-        ++ [
+        [
           {
             # Autoinclude configuration.nix and hardware-configuration.nix
             imports = builtins.filter builtins.pathExists [
               "${directory}/machines/${name}/configuration.nix"
               hwConfig
             ];
-            config.warnings =
-              lib.optionals
-                (builtins.all builtins.pathExists [
-                  hwConfig
-                  facterJson
-                ])
-                [
-                  ''
-                    Duplicate hardware facts: '${hwConfig}' and '${facterJson}' exist.
-                    Using both is not recommended.
-
-                    It is recommended to use the hardware facts from '${facterJson}', please remove '${hwConfig}'.
-                  ''
-                ];
           }
           settings
           clan-core.nixosModules.clanCore

nixosModules/clanCore/default.nix

@@ -9,6 +9,7 @@
     ./meta/interface.nix
     ./metadata.nix
     ./networking.nix
+    ./nixos-facter.nix
     ./nix-settings.nix
     ./options.nix
     ./outputs.nix

nixosModules/clanCore/nixos-facter.nix

@@ -0,0 +1,24 @@
+{ lib, config, ... }:
+let
+  directory = config.clan.core.clanDir;
+  inherit (config.clan.core) machineName;
+  facterJson = "${directory}/machines/${machineName}/facter.json";
+  hwConfig = "${directory}/machines/${machineName}/hardware-configuration.nix";
+in
+{
+  facter.reportPath = lib.mkIf (builtins.pathExists facterJson) facterJson;
+  warnings =
+    lib.optionals
+      (builtins.all builtins.pathExists [
+        hwConfig
+        facterJson
+      ])
+      [
+        ''
+          Duplicate hardware facts: '${hwConfig}' and '${facterJson}' exist.
+          Using both is not recommended.
+
+          It is recommended to use the hardware facts from '${facterJson}', please remove '${hwConfig}'.
+        ''
+      ];
+}