themes: Allow yaml paths

nix/lib/default.nix

@@ -0,0 +1,22 @@
+{ inputs, pkgs, ... }: {
+  build_systems = systems: builtins.listToAttrs (map (name: {
+    name = name;
+    value =
+      let
+        mod = ../hardware/${name}/configuration.nix;
+      in
+      inputs.nixpkgs.lib.nixosSystem {
+        specialArgs = {
+          inherit inputs pkgs mod;
+        };
+        modules = [
+          inputs.home-manager.nixosModules.home-manager
+          inputs.stylix.nixosModules.stylix
+          ../base
+          ../programs
+          mod
+        ] ++ inputs.nixpkgs.lib.optional (builtins.pathExists ../hardware/${name}/${name}.nix) ../hardware/${name}/${name}.nix
+        ++ inputs.nixpkgs.lib.optional (builtins.pathExists mod) mod;
+      };
+  } )systems);
+}