feat: Add "nixpkgs" registry

Path "<nixpkgs>" will redirect to the nixpkgs instance of the flake input

Author: aiotter

default.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, lib, ... }:
+{ config, pkgs, lib, flakeInputs, ... }:
 
 {
   # imports = [ <home-manager/nix-darwin> ];
@@ -8,6 +8,9 @@
 
   nix = {
     package = pkgs.nixVersions.latest;
+    registry = {
+      nixpkgs.flake = flakeInputs.nixpkgs;
+    };
     extraOptions = ''
       experimental-features = nix-command flakes
       bash-prompt = [nix]\W$ 

flake.nix

@@ -14,7 +14,7 @@
     };
   };
 
-  outputs = { self, nixpkgs, flake-utils, darwin, mac-app-util, ... }:
+  outputs = inputs@{ self, nixpkgs, flake-utils, darwin, mac-app-util, ... }:
     let
       darwinSystems = with flake-utils.lib.system; [ x86_64-darwin aarch64-darwin ];
     in
@@ -23,6 +23,7 @@
         {
           inherit system;
           modules = [ ./. mac-app-util.darwinModules.default ];
+          specialArgs = { flakeInputs = inputs; };
         };
 
       packages.darwin-system = darwinConfigurations.default.system;