Added flake.nix

flake.nix

@@ -0,0 +1,31 @@
+{
+  description = "A flake for dump1090 with DL0XK patches.";
+
+  inputs = {
+    # Pointing to the current stable release of nixpkgs. You can
+    # customize this to point to an older version or unstable if you
+    # like everything shining.
+    #
+    # E.g.
+    #
+    # nixpkgs.url = "github:NixOS/nixpkgs/unstable";
+    nixpkgs.url = "github:NixOS/nixpkgs/23.05";
+
+    utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, utils }:
+    utils.lib.eachDefaultSystem
+      (system:
+        let
+          pkgs = nixpkgs.legacyPackages.${system};
+        in
+        {
+
+          formatter = pkgs.nixpkgs-fmt;
+
+          defaultPackage = pkgs.callPackage ./default.nix { };
+        }
+      );
+
+}