WIP: Integration branch with darwin and deck support

- Added darwin and jovian inputs
- Added platform-specific package configurations
- Added darwinConfigurations and deck nixosConfiguration
- Copied darwin and deck specific files
- Fixed darwin version compatibility

Some configurations still need debugging

flake.nix

@@ -38,6 +38,33 @@
     # Matrix
     nix-matrix-appservices.url = "gitlab:coffeetables/nix-matrix-appservices";
 
+    # Darwin
+    darwin = {
+      url = "github:LnL7/nix-darwin/nix-darwin-25.05";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    nix-homebrew = {
+      url = "github:zhaofengli-wip/nix-homebrew";
+    };
+    homebrew-bundle = {
+      url = "github:homebrew/homebrew-bundle";
+      flake = false;
+    };
+    homebrew-core = {
+      url = "github:homebrew/homebrew-core";
+      flake = false;
+    };
+    homebrew-cask = {
+      url = "github:homebrew/homebrew-cask";
+      flake = false;
+    };
+
+    # Steam Deck / Gaming
+    jovian = {
+      url = "github:Jovian-Experiments/Jovian-NixOS";
+      inputs.nixpkgs.follows = "unstable";
+    };
+
     # Others
     nur.url = "github:nix-community/NUR";
     rust-overlay = {
@@ -57,7 +84,8 @@
 
   outputs = { self, nixpkgs, unstable, nixos-hardware, home-manager, deploy-rs
     , agenix, disko, basant, grasp, nix-matrix-appservices, nur, tidalcycles
-    , rust-overlay, vimwikicli, ... }@inputs:
+    , rust-overlay, vimwikicli, darwin, nix-homebrew, homebrew-bundle
+    , homebrew-core, homebrew-cask, jovian, ... }@inputs:
     let
       forAllSystems = nixpkgs.lib.genAttrs [
         "aarch64-linux"
@@ -118,6 +146,65 @@
             tidalcycles.overlays.default # needed for nvim which comes pre-installed lol
           ];
         });
+
+      # Package set for Darwin systems  
+      darwinPkgsFor = forAllSystems (system:
+        import nixpkgs {
+          inherit system;
+          config = {
+            permittedInsecurePackages = [
+              "olm-3.2.16" 
+            ];
+            allowUnfreePredicate = pkg:
+              builtins.elem (nixpkgs.lib.getName pkg) [
+                "ripcord"
+                "vcv-rack"
+                "SunVox"
+                "renoise"
+              ];
+          };
+          overlays = [
+            rust-overlay.overlays.default
+            tidalcycles.overlays.default
+            agenix.overlays.default
+            nur.overlay
+            unstableOverlay
+            vimwikiOverlay
+            self.overlays.additions
+            self.overlays.modifications
+          ];
+        });
+
+      # Package set for Steam Deck (gaming-focused)
+      deckPkgsFor = forAllSystems (system:
+        import unstable {
+          inherit system;
+          config = {
+            permittedInsecurePackages = [
+              "olm-3.2.16" 
+            ];
+            allowUnfreePredicate = pkg:
+              builtins.elem (nixpkgs.lib.getName pkg) [
+                "ripcord"
+                "vcv-rack"
+                "SunVox"
+                "renoise"
+                "steam"
+                "steam-original"
+                "steam-runtime"
+              ];
+          };
+          overlays = [
+            rust-overlay.overlays.default
+            tidalcycles.overlays.default
+            agenix.overlays.default
+            nur.overlay
+            unstableOverlay
+            vimwikiOverlay
+            self.overlays.additions
+            self.overlays.modifications
+          ];
+        });
     in {
       # Your custom packages
       # Acessible through 'nix build', 'nix shell', etc
@@ -224,6 +311,48 @@
             }
           ];
         };
+
+        deck = unstable.lib.nixosSystem rec {
+          specialArgs = { inherit inputs self; };
+          system = "x86_64-linux";
+          pkgs = deckPkgsFor.${system};
+          modules = [
+            ./hosts/deck
+            jovian.nixosModules.default
+            self.nixosModules.wireguard
+            agenix.nixosModules.age
+            self.nixosModules.backup
+            home-manager.nixosModules.home-manager
+            {
+              nix.registry.nixpkgs.flake = unstable;
+              home-manager.useGlobalPkgs = true;
+              home-manager.useUserPackages = true;
+              home-manager.users.anish = import ./home/gui;
+            }
+          ];
+        };
+      };
+
+      # Darwin configuration entrypoint  
+      darwinConfigurations = {
+        "Anishs-MacBook-Pro" = darwin.lib.darwinSystem rec {
+          system = "aarch64-darwin";
+          pkgs = darwinPkgsFor.${system};
+          specialArgs = { inherit inputs self; };
+          modules = [
+            ./hosts/darwin
+            home-manager.darwinModules.home-manager
+            agenix.darwinModules.default
+            {
+              users.users.anishlakhwara.home = "/Users/anishlakhwara";
+              home-manager = {
+                users.anishlakhwara = import ./home/darwin;
+                useGlobalPkgs = true;
+                useUserPackages = true;
+              };
+            }
+          ];
+        };
       };
 
       # Standalone home-manager configuration entrypoint