Added the flake to fetch the official macos release

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1778672786,
+        "narHash": "sha256-Blg88K1jwG+P0Mr27+rKMFCufdrWkV3wWh9AdYtz0FQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "eef00dfd8a712b34af845f9350bac681b1228bd1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,23 @@
+{
+  description = "Pre-compiled Godot binary for MacOS, fetched from official releases and delivered as a flake";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  outputs = {self, nixpkgs}:
+  let
+    pkgs = nixpkgs.legacyPackages.aarch64-darwin;
+  in {
+    packages.aarch64-darwin.default = pkgs.stdenv.mkDerivation rec {
+      pname = "godot-mac";
+      version = "v4.6.2-stable";
+      src = pkgs.fetchurl {
+        url = "https://github.com/godotengine/godot/releases/download/4.6.2-stable/Godot_${version}_macos.universal.zip";
+        sha256 = "sha256-ZmsqZOS1xZ2w5JdGBbiI63LrfU5g6HDSvmzBlye1CAc=";
+      };
+      nativeBuildInputs = [pkgs.unzip];
+      sourceRoot = ".";
+      installPhase = ''
+mkdir -p $out/Applications
+cp -r Godot.app $out/Applications/
+'';
+    };
+  };
+}