Initialize nix-darwin config for darwinix

flake.lock

@@ -522,6 +522,27 @@
         "type": "github"
       }
     },
+    "nix-darwin": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1773000227,
+        "narHash": "sha256-zm3ftUQw0MPumYi91HovoGhgyZBlM4o3Zy0LhPNwzXE=",
+        "owner": "nix-darwin",
+        "repo": "nix-darwin",
+        "rev": "da529ac9e46f25ed5616fd634079a5f3c579135f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-darwin",
+        "ref": "master",
+        "repo": "nix-darwin",
+        "type": "github"
+      }
+    },
     "nix-flatpak": {
       "locked": {
         "lastModified": 1767983141,
@@ -593,16 +614,16 @@
     },
     "nixpkgs-stable_2": {
       "locked": {
-        "lastModified": 1767313136,
+        "lastModified": 1773814637,
-        "narHash": "sha256-16KkgfdYqjaeRGBaYsNrhPRRENs0qzkQVUooNHtoy2w=",
+        "narHash": "sha256-GNU+ooRmrHLfjlMsKdn0prEKVa0faVanm0jrgu1J/gY=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "ac62194c3917d5f474c1a844b6fd6da2db95077d",
+        "rev": "fea3b367d61c1a6592bc47c72f40a9f3e6a53e96",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-25.05",
+        "ref": "nixos-25.11",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -824,6 +845,7 @@
         "masssprings": "masssprings",
         "niri": "niri",
         "nix-alien": "nix-alien",
+        "nix-darwin": "nix-darwin",
         "nix-flatpak": "nix-flatpak",
         "nixpkgs": "nixpkgs_6",
         "nixpkgs-stable": "nixpkgs-stable_2",

flake.nix

@@ -12,8 +12,12 @@
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     hardware.url = "github:nixos/nixos-hardware";
 
+    # Darwin
+    nix-darwin.url = "github:nix-darwin/nix-darwin/master";
+    nix-darwin.inputs.nixpkgs.follows = "nixpkgs";
+
     # NOTE: Update this after May and November
-    nixpkgs-stable.url = "github:nixos/nixpkgs/nixos-25.05";
+    nixpkgs-stable.url = "github:nixos/nixpkgs/nixos-25.11";
 
     # Home Manager
     home-manager.url = "github:nix-community/home-manager";
@@ -91,12 +95,14 @@
   outputs = {
     self,
     nixpkgs,
+    nix-darwin,
     ...
   } @ inputs: let
     # Our configuration is buildable on the following system/platform.
     # Configs can support more than a single system simultaneously,
     # e.g. NixOS (linux) and MacOS (darwin) or Arm.
     system = "x86_64-linux";
+    darwinSystem = "aarch64-darwin";
 
     # We configure our global packages here.
     # Usually, "nixpkgs.legacyPackages.${system}" is used (and more efficient),
@@ -139,6 +145,16 @@
       ];
     };
 
+    darwinPkgs = import nixpkgs {
+      system = darwinSystem;
+
+      hostPlatform = darwinSystem;
+      config.allowUnfree = true;
+      config.allowUnfreePredicate = pkg: true;
+
+      overlays = [];
+    };
+
     # My own library functions are imported here.
     # They are made available to the system and HM configs by inheriting mylib.
     mylib = import ./lib {
@@ -153,6 +169,14 @@
       inherit (nixpkgs) lib;
     };
 
+    darwinMylib = import ./lib {
+      inherit inputs darwinPkgs;
+
+      inherit (nixpkgs) lib;
+
+      pkgs = darwinPkgs;
+    };
+
     # NOTE: Keep public keys here so they're easy to rotate
     publicKeys.christoph = {
       # /home/christoph/.ssh/id_ed25519.pub
@@ -177,6 +201,19 @@
     # Local shell for NixFlake directory
     devShells.${system}.default = import ./shell.nix {inherit pkgs;};
 
+    # Usage: sudo darwin-rebuild switch --flake .#darwinix
+    darwinConfigurations = {
+      darwinix = darwinMylib.nixos.mkDarwinConfigWithHomeManagerModule {
+        inherit publicKeys;
+
+        system = darwinSystem;
+        mylib = darwinMylib;
+        hostname = "darwinix";
+        username = "christoph";
+        extraModules = [];
+      };
+    };
+
     # We give each configuration a (host)name to choose a configuration when rebuilding.
     # This makes it easy to add different configurations (e.g. for a laptop).
     # Usage: sudo nixos-rebuild switch --flake .#nixinator

home/christoph/darwinix/default.nix

@@ -0,0 +1,225 @@
+{
+  pkgs,
+  nixosConfig,
+  config,
+  lib,
+  mylib,
+  username,
+  inputs,
+  ...
+}: {
+  config = {
+    paths = rec {
+      nixflake = "${config.home.homeDirectory}/NixFlake";
+      dotfiles = "${nixflake}/config";
+    };
+
+    homemodules = {
+      color = {
+        scheme = "catppuccin-mocha";
+        accent = "mauve";
+        accentHl = "pink";
+        accentDim = "lavender";
+        accentText = "base";
+
+        font = "MonoLisa Alt Script";
+      };
+
+      fish.enable = true;
+
+      git = {
+        enable = true;
+
+        userName = "Christoph Urlacher";
+        userEmail = "christoph.urlacher@protonmail.com";
+        signCommits = true;
+      };
+
+      kitty.enable = true;
+      lazygit.enable = true;
+
+      neovim = {
+        enable = true;
+        alias = true;
+        neovide = true;
+      };
+
+      yazi.enable = true;
+    };
+
+    home = {
+      inherit username;
+
+      homeDirectory = "/Users/${config.home.username}";
+      enableNixpkgsReleaseCheck = true;
+
+      packages = with pkgs; [
+        (ripgrep.override {withPCRE2 = true;})
+        gdu
+        duf
+        sd
+
+        cachix
+      ];
+
+      stateVersion = "25.11";
+    };
+
+    programs = {
+      home-manager.enable = true;
+
+      # TODO: Module
+      fastfetch = {
+        enable = true;
+
+        settings = {
+          logo = {
+            padding = {
+              top = 4;
+              left = 1;
+              right = 2;
+            };
+          };
+
+          display = {
+            separator = "";
+            key.width = 17;
+          };
+
+          # Box Drawing: ╭ ─ ╮ ╰ ╯ │
+          modules = [
+            # Title
+            {
+              type = "title";
+              format = "{#1}╭─── {#}{user-name-colored}";
+            }
+
+            # System Information
+            {
+              type = "custom";
+              format = "{#1}│ {#}System Information";
+            }
+            {
+              type = "os";
+              key = "{#separator}│  {#keys}󰍹 OS";
+            }
+            {
+              type = "kernel";
+              key = "{#separator}│  {#keys}󰒋 Kernel";
+            }
+            {
+              type = "bootmgr";
+              key = "{#separator}│  {#keys}󰒋 BootMGR";
+            }
+            {
+              type = "uptime";
+              key = "{#separator}│  {#keys}󰅐 Uptime";
+            }
+            {
+              type = "packages";
+              key = "{#separator}│  {#keys}󰏖 Packages";
+              # format = "{all}";
+            }
+            {
+              type = "custom";
+              format = "{#1}│";
+            }
+
+            # Desktop Environment
+            {
+              type = "custom";
+              format = "{#1}│ {#}Desktop Environment";
+            }
+            {
+              type = "de";
+              key = "{#separator}│  {#keys}󰧨 DE";
+            }
+            {
+              type = "wm";
+              key = "{#separator}│  {#keys}󱂬 WM";
+            }
+            {
+              type = "wmtheme";
+              key = "{#separator}│  {#keys}󰉼 Theme";
+            }
+            {
+              type = "display";
+              key = "{#separator}│  {#keys}󰹑 Resolution";
+            }
+            {
+              type = "shell";
+              key = "{#separator}│  {#keys}󰞷 Shell";
+            }
+            {
+              type = "terminalfont";
+              key = "{#separator}│  {#keys}󰛖 Font";
+            }
+            {
+              type = "icons";
+              key = "{#separator}│  {#keys} Icons";
+            }
+            {
+              type = "cursor";
+              key = "{#separator}│  {#keys}󰆽 Cursor";
+            }
+            {
+              type = "custom";
+              format = "{#1}│";
+            }
+
+            # Hardware Information
+            {
+              type = "custom";
+              format = "{#1}│ {#}Hardware Information";
+            }
+            {
+              type = "board";
+              key = "{#separator}│  {#keys} Board";
+            }
+            {
+              type = "cpu";
+              key = "{#separator}│  {#keys}󰻠 CPU";
+            }
+            {
+              type = "gpu";
+              key = "{#separator}│  {#keys}󰢮 GPU";
+            }
+            {
+              type = "memory";
+              key = "{#separator}│  {#keys}󰍛 Memory";
+            }
+            # {
+            #   type = "disk";
+            #   key = "{#separator}│  {#keys}󰋊 Disk (/)";
+            #   folders = "/";
+            # }
+            # {
+            #   type = "disk";
+            #   key = "{#separator}│  {#keys}󰋊 Disk (~/Games)";
+            #   folders = "/home/christoph/Games";
+            # }
+            {
+              type = "btrfs";
+              key = "{#separator}│  {#keys}󰋊 BTRFS";
+            }
+            {
+              type = "custom";
+              format = "{#1}│";
+            }
+
+            # Colors Footer
+            {
+              type = "colors";
+              key = "{#separator}╰─── {#1}";
+              keyWidth = 6;
+              symbol = "circle";
+            }
+          ];
+        };
+      };
+    };
+
+    services = {
+    };
+  };
+}

home/homemodules/darwin.nix

@@ -0,0 +1,17 @@
+{inputs, ...}: {
+  imports = [
+    # My own HM modules
+    ./color
+    ./fish
+    ./git
+    ./kitty
+    ./lazygit
+    ./neovim
+    ./paths
+    ./yazi
+
+    # HM modules imported from the flake inputs
+    inputs.nixvim.homeModules.nixvim
+    inputs.textfox.homeManagerModules.default
+  ];
+}

lib/nixos.nix

@@ -80,6 +80,74 @@
       ];
     };
 
+  mkDarwinConfigWithHomeManagerModule = {
+    system,
+    mylib,
+    hostname,
+    username,
+    publicKeys,
+    extraModules ? [],
+  }:
+    inputs.nix-darwin.lib.darwinSystem {
+      inherit system;
+
+      # Values in "specialArgs" are propagated to all system modules.
+      specialArgs = {
+        inherit inputs system hostname mylib username publicKeys;
+      };
+
+      modules = builtins.concatLists [
+        [
+          # Replace the default "pkgs" with my configured version
+          # to allow installation of unfree software and my own overlays.
+          {nixpkgs.pkgs = pkgs;}
+
+          # Import the toplevel system configuration module.
+          ../system/cachix.nix
+
+          # Host specific configuration
+          ../system/${hostname}
+
+          # Import all of my custom system modules
+          # ../system/systemmodules # TODO:
+        ]
+
+        extraModules
+
+        # HM is installed as a system module when using mkNixosConfigWithHomeManagerModule.
+        [
+          inputs.home-manager.darwinModules.home-manager
+          {
+            home-manager = {
+              # Values in "extraSpecialArgs" are propagated to all HM modules.
+              extraSpecialArgs = {
+                inherit inputs system hostname mylib username publicKeys;
+              };
+
+              # Use the "pkgs" from the system configuration.
+              # This disables "nixpkgs.*" options in HM modules.
+              useGlobalPkgs = true;
+
+              # Packages in "users.${username}.packages" will be installed
+              # to /etc/profiles instead of ~/.nix-profile.
+              useUserPackages = true;
+
+              users.${username}.imports = [
+                # Host specific configuration
+                ../home/${username}/${hostname}
+              ];
+
+              sharedModules = [
+                # Import all of my custom HM modules.
+                # Putting them into sharedModules enables correct nixd completions.
+                ../home/homemodules/darwin.nix
+              ];
+            };
+          }
+        ]
+      ];
+    };
+
   mkNixosSystemConfig = {
     system,
     mylib,

system/darwinix/default.nix

@@ -0,0 +1,65 @@
+{
+  self,
+  lib,
+  mylib,
+  pkgs,
+  username,
+  config,
+  inputs,
+  publicKeys,
+  ...
+}: {
+  nix = {
+    package = pkgs.nixVersions.stable;
+    extraOptions = ''
+      experimental-features = nix-command flakes pipe-operators
+    '';
+
+    settings.trusted-users = ["root" "${username}"];
+
+    gc.automatic = false;
+    gc.options = "--delete-older-than 5d";
+    settings.auto-optimise-store = true;
+    optimise.automatic = true;
+
+    registry = lib.mapAttrs' (n: v: lib.nameValuePair n {flake = v;}) inputs;
+
+    nixPath = [
+      "nixpkgs=${inputs.nixpkgs.outPath}"
+      "home-manager=${inputs.home-manager.outPath}"
+    ];
+  };
+
+  users.users.${username} = {
+    isHidden = false;
+    description = "Christoph";
+    home = "/Users/${username}";
+    createHome = false;
+
+    # NOTE: Not set if the user already exists on darwin, so use chsh for the root user
+    shell = pkgs.fish;
+
+    openssh.authorizedKeys.keys = [
+      publicKeys.${username}.ssh
+    ];
+
+    # packages = with pkgs; [];
+  };
+
+  environment.systemPackages = with pkgs; [
+    alejandra
+    neovim
+    wget
+  ];
+
+  programs = {
+    fish.enable = true;
+  };
+
+  # Set Git commit hash for darwin-version.
+  # system.configurationRevision = self.rev or self.dirtyRev or null;
+
+  # Used for backwards compatibility, please read the changelog before changing.
+  # $ darwin-rebuild changelog
+  system.stateVersion = 6;
+}

system/default.nix

@@ -276,7 +276,7 @@ with mylib.networking; {
     shell = pkgs.fish;
 
     openssh.authorizedKeys.keys = [
-      publicKeys.christoph.ssh
+      publicKeys.${username}.ssh
     ];
 
     # We do this with HomeManager