First rewrite for the home-manager unstable overlay

flake.nix

@@ -33,6 +33,23 @@
       mksdImage = host: (self.nixosConfigurations.${host}.extendModules {
         modules = [ "${nixpkgs}/nixos/modules/installer/sd-card/sd-image-aarch64.nix" ];
       }).config.system.build.sdImage;
+      # required for home-manager only setup {
+      overlay-unstable = final: prev: {
+        unstable = import inputs.nixpkgs-unstable {
+          system = "x86_64-linux";
+          config.allowUnfree = true;
+        };
+      };
+      pkgs = import inputs.nixpkgs {
+        system = "x86_64-linux";
+        config = {
+          allowUnfree = true;
+        };
+        overlays = [
+          overlay-unstable
+        ];
+      };
+      # }
     in
     {
       images = {
@@ -114,12 +131,7 @@
       };
       homeConfigurations = {
         "zweili@co-ws-con4" = home-manager.lib.homeManagerConfiguration {
-          pkgs = import inputs.nixpkgs {
-            system = "x86_64-linux";
-            config = {
-              allowUnfree = true;
-            };
-          };
+          inherit pkgs;
           modules = [
             "${inputs.self}/home-manager/profiles/work-wsl.nix"
           ];