more work on darwin

hosts/default.nix

@@ -1,61 +1,3 @@
-{ self, nixpkgs-unstable, tree, ... }@inputs:
-let
-  defaultModules = [
-    # NO_INLINE
-    tree.impure.modules.nixos
-    tree.impure.profiles.base
-  ];
-  defaultModulesNixOSUnstable = defaultModules ++ [
-    # NO_INLINE
-    inputs.home-manager-unstable.nixosModules.home-manager
-  ];
-
-  defaultSpecialArgs = {
-    tree = tree.impure;
-    pureTree = tree.pure;
-  };
-
-  defaultSpecialArgsNixOSUnstable = defaultSpecialArgs // {
-    inputs = inputs // {
-      # set these to the correct versions from inputs
-      nixpkgs = inputs.nixpkgs-unstable;
-      home-manager = inputs.home-manager-unstable;
-    };
-  };
-
-  nixosUnstableSystem = nixpkgs-unstable.lib.nixosSystem;
-
-in {
-  lappy = nixosUnstableSystem {
-    specialArgs = defaultSpecialArgsNixOSUnstable;
-    system = "x86_64-linux";
-    modules = defaultModulesNixOSUnstable
-      ++ [ ./lappy/lappy.nix ./lappy/hardware.nix ];
-  };
-
-  lappy-vm = nixosUnstableSystem {
-    specialArgs = defaultSpecialArgsNixOSUnstable;
-    system = "x86_64-linux";
-    modules = defaultModulesNixOSUnstable
-      ++ [ ./lappy/lappy.nix ./lappy/vm.nix ];
-  };
-
-  rescue-x86_64 = nixosUnstableSystem {
-    specialArgs = defaultSpecialArgsNixOSUnstable;
-    system = "x86_64-linux";
-    modules = defaultModulesNixOSUnstable ++ [ ./rescue/rescue.nix ];
-  };
-
-  hetzner-vm = nixosUnstableSystem {
-    specialArgs = defaultSpecialArgsNixOSUnstable;
-    system = "x86_64-linux";
-    modules = defaultModulesNixOSUnstable ++ [ ./hetzner-vm/hetzner-vm.nix ];
-  };
-
-  # nix --no-sandbox build .#nixosConfigurations.raspberry.config.system.build.sdImage
-  raspberry = nixosUnstableSystem {
-    specialArgs = defaultSpecialArgsNixOSUnstable;
-    system = "aarch64-linux";
-    modules = defaultModulesNixOSUnstable ++ [ ./raspberry/raspberry.nix ];
-  };
-}
+{...}@inputs: {
+    nixosConfigurations = import ./nixos.nix inputs;
+}

hosts/defaults.nix

@@ -0,0 +1,33 @@
+{ self, nixpkgs-unstable, tree, ... }@inputs:
+let
+  defaultModules = [
+    # NO_INLINE
+    tree.impure.modules.nixos
+    tree.impure.profiles.base
+  ];
+  defaultModulesNixOSUnstable = defaultModules ++ [
+    # NO_INLINE
+    inputs.home-manager-unstable.nixosModules.home-manager
+  ];
+
+  defaultSpecialArgs = {
+    tree = tree.impure;
+    pureTree = tree.pure;
+  };
+
+  defaultSpecialArgsNixOSUnstable = defaultSpecialArgs // {
+    inputs = inputs // {
+      # set these to the correct versions from inputs
+      nixpkgs = inputs.nixpkgs-unstable;
+      home-manager = inputs.home-manager-unstable;
+    };
+  };
+
+  nixosUnstableSystem = nixpkgs-unstable.lib.nixosSystem;
+
+in {
+ inherit defaultModules;
+ inherit defaultModulesNixOSUnstable;
+ inherit defaultSpecialArgs;
+ inherit defaultSpecialArgsNixOSUnstable;
+}

hosts/nixos.nix

@@ -0,0 +1,43 @@
+{ self, nixpkgs-unstable, tree, ... }@inputs:
+let
+
+  defaults = import ./defaults.nix inputs;
+
+  defaultModulesNixOSUnstable = defaults.defaultModulesNixOSUnstable;
+  defaultSpecialArgsNixOSUnstable = defaults.defaultSpecialArgsNixOSUnstable;
+  nixosUnstableSystem = nixpkgs-unstable.lib.nixosSystem;
+
+in {
+  lappy = nixosUnstableSystem {
+    specialArgs = defaultSpecialArgsNixOSUnstable;
+    system = "x86_64-linux";
+    modules = defaultModulesNixOSUnstable
+      ++ [ ./lappy/lappy.nix ./lappy/hardware.nix ];
+  };
+
+  lappy-vm = nixosUnstableSystem {
+    specialArgs = defaultSpecialArgsNixOSUnstable;
+    system = "x86_64-linux";
+    modules = defaultModulesNixOSUnstable
+      ++ [ ./lappy/lappy.nix ./lappy/vm.nix ];
+  };
+
+  rescue-x86_64 = nixosUnstableSystem {
+    specialArgs = defaultSpecialArgsNixOSUnstable;
+    system = "x86_64-linux";
+    modules = defaultModulesNixOSUnstable ++ [ ./rescue/rescue.nix ];
+  };
+
+  hetzner-vm = nixosUnstableSystem {
+    specialArgs = defaultSpecialArgsNixOSUnstable;
+    system = "x86_64-linux";
+    modules = defaultModulesNixOSUnstable ++ [ ./hetzner-vm/hetzner-vm.nix ];
+  };
+
+  # nix --no-sandbox build .#nixosConfigurations.raspberry.config.system.build.sdImage
+  raspberry = nixosUnstableSystem {
+    specialArgs = defaultSpecialArgsNixOSUnstable;
+    system = "aarch64-linux";
+    modules = defaultModulesNixOSUnstable ++ [ ./raspberry/raspberry.nix ];
+  };
+}

outputs.nix

@@ -39,9 +39,9 @@ let
       };
     };
   };
+  hosts = import ./hosts ({ inherit tree; } // inputs);
 in {
-  #legacyPackages.tree = tree;
-  nixosConfigurations = import ./hosts ({ inherit tree; } // inputs);
+  nixosConfigurations = hosts.nixosConfigurations;
 
   devShell."x86_64-linux" = pkgs-x86_64-linux.mkShell {
     packages = with pkgs-x86_64-linux; [