Simplify flake.nix

flake.nix

@@ -47,98 +47,72 @@
     }@inputs:
     let
       system = "x86_64-linux";
+      username = "josh";
+      profile = "desktop";
+      homePath = ./. + "/homes/${username}/home.nix";
+
       pkgs = import nixpkgs {
         inherit system;
         config.allowUnfree = true;
         overlays = [ nix-vscode-extensions.overlays.default ];
       };
+
+      mkHost =
+        {
+          host,
+          extraModules ? [ ],
+        }:
+        nixpkgs.lib.nixosSystem {
+          inherit system;
+          specialArgs = {
+            inherit
+              homePath
+              host
+              inputs
+              profile
+              username
+              ;
+          };
+          inherit pkgs;
+          modules = [ ./hosts/${host} ] ++ extraModules;
+        };
     in
     {
       nixosConfigurations = {
-        laptop = let
-          host = "laptop";
-          profile = "desktop";
-          username = "josh";
-        in nixpkgs.lib.nixosSystem {
-          inherit system;
-          specialArgs = {
-            inherit inputs;
-            inherit host;
-            inherit profile;
-            inherit username;
-          };
-          pkgs = pkgs;
-          modules = [
-            ./hosts/${host}
-          ];
-        };
+        laptop = mkHost { host = "laptop"; };
 
-        vm = let
-          host = "vm";
-          profile = "desktop";
-          username = "josh";
-        in nixpkgs.lib.nixosSystem {
-          inherit system;
-          specialArgs = {
-            inherit inputs;
-            inherit host;
-            inherit profile;
-            inherit username;
-          };
-          pkgs = pkgs;
-          modules = [
-            ./hosts/${host}
-          ];
-        };
+        vm = mkHost { host = "vm"; };
 
-        live = let
+        live = mkHost {
           host = "installation-iso";
-          profile = "desktop";
-          username = "josh";
-        in nixpkgs.lib.nixosSystem {
-          inherit system;
-          specialArgs = {
-            inherit inputs;
-            inherit host;
-            inherit profile;
-            inherit username;
-          };
-          pkgs = pkgs;
-          modules = [
+          extraModules = [
             (nixpkgs + "/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix")
             { environment.systemPackages = [ install-system.packages.${system}.default ]; }
-            ./hosts/installation-iso
           ];
         };
       };
 
-      homeConfigurations.josh = let
-        profile = "desktop";
-        username = "josh";
-        gpgSigningKey = null;
-      in home-manager.lib.homeManagerConfiguration {
-          extraSpecialArgs = {
-            inherit inputs;
-            inherit profile;
-            inherit username;
-          };
-        pkgs = pkgs;
+      homeConfigurations.${username} = home-manager.lib.homeManagerConfiguration {
+        extraSpecialArgs = {
+          inherit inputs profile username;
+        };
+        inherit pkgs;
         modules = [
           {
-            modules.gpg.signingKey = gpgSigningKey;
+            modules.gpg.signingKey = null;
           }
-          ./homes/josh/home.nix
+          homePath
           stylix.homeModules.stylix
         ];
       };
 
-      devShell.${system} = nixpkgs.legacyPackages.${system}.pkgs.mkShell {
-        packages = with nixpkgs.legacyPackages.${system}.pkgs; [
+      devShell.${system} = pkgs.mkShell {
+        packages = with pkgs; [
           nil
           nixd
         ];
       };
 
-      formatter.${system} = nixpkgs.legacyPackages.${system}.nixfmt-tree;
+      formatter.${system} = pkgs.nixfmt-tree;
     };
 }