@@ -1,5 +1,26 @@
 {
   "nodes": {
+    "darwin": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs-unstable"
+        ]
+      },
+      "locked": {
+        "lastModified": 1664210064,
+        "narHash": "sha256-df6nKVZe/yAhmJ9csirTPahc0dldwm3HBhCVNA6qWr0=",
+        "owner": "lnl7",
+        "repo": "nix-darwin",
+        "rev": "02d2551c927b7d65ded1b3c7cd13da5cc7ae3fcf",
+        "type": "github"
+      },
+      "original": {
+        "owner": "lnl7",
+        "ref": "master",
+        "repo": "nix-darwin",
+        "type": "github"
+      }
+    },
     "nixos": {
       "locked": {
         "lastModified": 1664883812,
@@ -64,6 +85,7 @@ }
     },
     "root": {
       "inputs": {
+        "darwin": "darwin",
         "nixos": "nixos",
         "nixos-hardware": "nixos-hardware",
         "nixos-unstable": "nixos-unstable",

@@ -4,13 +4,20 @@ nixos.url = github:NixOS/nixpkgs/nixos-22.05;
     nixos-unstable.url = github:NixOS/nixpkgs/nixos-unstable;
     nixpkgs-unstable.url = github:NixOS/nixpkgs;
     nixos-hardware.url = github:NixOS/nixos-hardware;
+    darwin.url = github:lnl7/nix-darwin/master;
+    darwin.inputs.nixpkgs.follows = "nixpkgs-unstable";
   };
 
-  outputs = { self, nixos-unstable, ... }@attrs: {
+  outputs = { self, darwin, nixos-unstable, ... }@attrs: {
     nixosConfigurations.prefect = nixos-unstable.lib.nixosSystem {
       system = "x86_64-linux";
       specialArgs = attrs;
       modules = [ ./system/prefect.nix ];
+    };
+    darwinConfigurations.mba = darwin.lib.darwinSystem {
+      system = "x86_64-darwin"; # aarch64 is still failing on some compiler-rt derivation
+      specialArgs = attrs;
+      modules = [ ./system/mba.nix ];
     };
   };
 }

@@ -25,6 +25,7 @@ # Used for backwards compatibility, please read the changelog before changing.
   # $ darwin-rebuild changelog
   system.stateVersion = 4;
 
+  nix.package = pkgs.nixVersions.stable;
   # You should generally set this to the total number of logical cores in your system.
   # $ sysctl -n hw.ncpu
   nix.settings = {

@@ -25,7 +25,9 @@ programs.zsh = {
     enable = true;
     enableCompletion = false; # Causes >2s startup time, overlaps home-manager config
     enableBashCompletion = true;
-    loginShellInit = builtins.readFile "/System/Library/Templates/Data/private/etc/zprofile";
+    loginShellInit = ''
+      source /System/Library/Templates/Data/private/etc/zprofile
+    '';
     interactiveShellInit = ''
       if [[ "$(locale LC_CTYPE)" == "UTF-8" ]]; then
         setopt COMBINING_CHARS