Setup nix flake to work with darwin, wsl and linux system configuration. This has ONLY been tested on Darwin so far.

nix/system/darwin.nix

@@ -0,0 +1,58 @@
+{
+  pkgs,
+  config,
+  self,
+  ...
+}:
+{
+  system.configurationRevision = self.rev or self.dirtyRev or null;
+
+  environment.systemPackages = with pkgs; [
+    home-manager
+    mkalias
+  ];
+
+  homebrew = {
+    enable = true;
+    casks = [
+      "ghostty"
+    ];
+    brews = [
+      "mas"
+    ];
+    masApps = { };
+    onActivation.cleanup = "zap";
+    onActivation.autoUpdate = true;
+    onActivation.upgrade = true;
+  };
+
+  system.defaults = {
+    dock.autohide = true;
+    finder.FXPreferredViewStyle = "clmv";
+    loginwindow.GuestEnabled = false;
+    NSGlobalDomain.AppleICUForce24HourTime = true;
+    NSGlobalDomain.AppleInterfaceStyle = "Dark";
+    NSGlobalDomain.KeyRepeat = 2;
+  };
+
+  system.activationScripts.applications.text =
+    let
+      env = pkgs.buildEnv {
+        name = "system-applications";
+        paths = config.environment.systemPackages;
+        pathsToLink = "/Applications";
+      };
+    in
+    pkgs.lib.mkForce ''
+      # Set up applications
+      echo "setting up /Applications..." >&2
+      rm -rf /Applications/Nix\ Apps
+      mkdir -p /Applications/Nix\ Apps
+      find ${env}/Applications -maxdepth 1 -type l -exec readlink '{}' + |
+      while read -r src; do
+        app_name=$(basename "$src")
+        echo "copying $src" >&2
+        ${pkgs.mkalias}/bin/mkalias "$src" "/Applications/Nix Apps/$app_name"
+      done
+    '';
+}

nix/system/linux.nix

@@ -0,0 +1,2 @@
+{ ... }: {
+}

nix/system/wsl.nix

@@ -0,0 +1,7 @@
+{ nixos-wsl, ... }: {
+    imports = [
+	nixosWSL.nixosModules.default
+    ];
+
+    wsl.enable = true;   
+}