decouple all config from host

darwin.nix

@@ -0,0 +1,70 @@
+{ flake }:
+{ pkgs, host, ... }:
+{
+  nix.settings.experimental-features = "nix-command flakes";
+
+  # Set Git commit hash for darwin-version.
+  system.configurationRevision = flake.rev or flake.dirtyRev or null;
+
+  # Used for backwards compatibility, please read the changelog before changing.
+  # $ darwin-rebuild changelog
+  system.stateVersion = 5;
+  nixpkgs.hostPlatform = host.platform;
+  nixpkgs.config.allowUnfree = true;
+
+  # Nix Darwin
+  # https://daiderd.com/nix-darwin/manual/index.html
+
+  # Security
+  system.defaults.screensaver.askForPassword = true;
+  system.defaults.screensaver.askForPasswordDelay = 0;
+  system.defaults.loginwindow.GuestEnabled = false;
+
+  # Dock
+  system.defaults.dock.autohide = true;
+  system.defaults.dock.orientation = "left";
+  system.defaults.dock.show-recents = false;
+  system.defaults.dock.persistent-apps = [
+    "/Applications/Arc.app"
+    "/Applications/Ghostty.app"
+    "/Applications/VSCodium.app"
+    "/Applications/Spotify.app"
+    "/System/Applications/System Settings.app"
+  ];
+  system.defaults.dock.persistent-others = [ ];
+
+  # Input devices
+  system.keyboard.enableKeyMapping = true;
+  system.keyboard.remapCapsLockToEscape = true;
+  system.defaults.NSGlobalDomain.InitialKeyRepeat = 25;
+  system.defaults.NSGlobalDomain.KeyRepeat = 2;
+  system.defaults.NSGlobalDomain."com.apple.mouse.tapBehavior" = 1;
+  system.defaults.NSGlobalDomain."com.apple.trackpad.scaling" = 0.875;
+  system.defaults.trackpad.Dragging = true;
+
+  # Finder
+  system.defaults.finder.AppleShowAllExtensions = true;
+  system.defaults.finder.ShowPathbar = true;
+
+  # Other
+  system.startup.chime = false;
+
+  users.users.${host.username} = {
+    home = "/Users/${host.username}";
+    shell = pkgs.fish;
+  };
+  programs.fish.enable = true;
+
+  homebrew = {
+    enable = true;
+    casks = import ./cask.nix;
+    taps = [ "lihaoyun6/tap" ];
+    onActivation = {
+      autoUpdate = true;
+      cleanup = "zap";
+    };
+  };
+
+  # Home Manager
+  home-manager.backupFileExtension = "backup";
+}

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "Example nix-darwin system flake";
+  description = "Personal Nix configuration";
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
@@ -12,106 +12,41 @@
   };
 
   outputs =
-    inputs@{
+    {
       self,
       nix-darwin,
       nixpkgs,
       home-manager,
     }:
     let
-      name = "mbp";
       hosts = import ./hosts;
-      configuration =
+      inherit (builtins) listToAttrs;
-        { pkgs, ... }:
-        {
-          nix.settings.experimental-features = "nix-command flakes";
-
-          # 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 = 5;
-          nixpkgs.hostPlatform = "aarch64-darwin";
-          nixpkgs.config.allowUnfree = true;
-
-          # Nix Darwin
-          # https://daiderd.com/nix-darwin/manual/index.html
-
-          # Security
-          system.defaults.screensaver.askForPassword = true;
-          system.defaults.screensaver.askForPasswordDelay = 0;
-          system.defaults.loginwindow.GuestEnabled = false;
-
-          # Dock
-          system.defaults.dock.autohide = true;
-          system.defaults.dock.orientation = "left";
-          system.defaults.dock.show-recents = false;
-          system.defaults.dock.persistent-apps = [
-            "/Applications/Arc.app"
-            "/Applications/Ghostty.app"
-            "/Applications/VSCodium.app"
-            "/Applications/Spotify.app"
-            "/System/Applications/System Settings.app"
-          ];
-          system.defaults.dock.persistent-others = [ ];
-
-          # Input devices
-          system.keyboard.enableKeyMapping = true;
-          system.keyboard.remapCapsLockToEscape = true;
-          system.defaults.NSGlobalDomain.InitialKeyRepeat = 25;
-          system.defaults.NSGlobalDomain.KeyRepeat = 2;
-          system.defaults.NSGlobalDomain."com.apple.mouse.tapBehavior" = 1;
-          system.defaults.NSGlobalDomain."com.apple.trackpad.scaling" = 0.875;
-          system.defaults.trackpad.Dragging = true;
-
-          # Finder
-          system.defaults.finder.AppleShowAllExtensions = true;
-          system.defaults.finder.ShowPathbar = true;
-
-          # Other
-          system.startup.chime = false;
-
-          users.users."niccoloborgioli" = {
-            home = "/Users/niccoloborgioli";
-            shell = pkgs.fish;
-          };
-          programs.fish.enable = true;
-
-          homebrew = {
-            enable = true;
-            casks = import ./cask.nix;
-            taps = [ "lihaoyun6/tap" ];
-            onActivation = {
-              autoUpdate = true;
-              cleanup = "zap";
-            };
-          };
-
-          # Home Manager
-          home-manager.backupFileExtension = "backup";
-        };
     in
     {
-      darwinConfigurations."${name}" = nix-darwin.lib.darwinSystem {
+      darwinConfigurations = listToAttrs (
-        modules = [
+        map (host: {
-          (
+          name = host.hostName;
-            { config, ... }:
+          value = nix-darwin.lib.darwinSystem {
-            {
+            modules = [
-              config._module.args = { inherit hosts; };
+              # Make `host` available as module arg.
-            }
+              (
-          )
+                { config, ... }:
-          configuration
+                {
-          home-manager.darwinModules.home-manager
+                  config._module.args = { inherit host; };
-          {
+                }
-            home-manager.useGlobalPkgs = true;
+              )
-            home-manager.useUserPackages = true;
+              # configuration
-            home-manager.users.niccoloborgioli = import ./home.nix;
+              (import ./darwin.nix { flake = self; })
-          }
+              home-manager.darwinModules.home-manager
-        ];
+              {
-      };
+                home-manager.backupFileExtension = "backup";
-
+                home-manager.useGlobalPkgs = true;
-      # Expose the package set, including overlays, for convenience.
+                home-manager.useUserPackages = true;
-      # darwinPackages = self.darwinConfigurations."${name}".pkgs;
+                home-manager.users.${host.username} = import ./home.nix { inherit host; };
+              }
+            ];
+          };
+        }) hosts
+      );
     };
 }

home.nix

@@ -1,11 +1,12 @@
-{ pkgs, ... }@args:
+{ host }:
+{ pkgs, ... }:
 {
   # https://nix-community.github.io/home-manager
   home.stateVersion = "25.05"; # Please read the comment before changing.
   programs.home-manager.enable = true;
 
-  home.username = "niccoloborgioli";
+  home.username = host.username;
-  home.homeDirectory = "/Users/niccoloborgioli";
+  home.homeDirectory = "/Users/${host.username}";
 
   home.packages =
     [ ] ++ (import ./home/shared.nix { inherit pkgs; }) ++ (import ./home/sflx.nix { inherit pkgs; });

hosts/default.nix

@@ -1,4 +1,5 @@
 [
   (import ./mac14.nix)
   (import ./mac16.nix)
+  (import ./sflx.nix)
 ]

hosts/mac14.nix

@@ -1,5 +1,5 @@
 {
   username = "cupcakearmy";
   hostName = "mac14";
-  system = "aarch64-darwin";
+  platform = "aarch64-darwin";
 }

hosts/mac16.nix

@@ -1,5 +1,5 @@
 {
   username = "niccoloborgioli";
   hostName = "mac16";
-  system = "aarch64-darwin";
+  platform = "aarch64-darwin";
 }

hosts/sflx.nix

@@ -0,0 +1,5 @@
+{
+  username = "niccoloborgioli";
+  hostName = "sflx";
+  platform = "aarch64-darwin";
+}