Add flake

flake.nix

@@ -0,0 +1,35 @@
+{
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-23.05";
+    flake-utils.url = "github:numtide/flake-utils";
+    interceptty-src.url = "github:geoffmeyers/interceptty";
+  };
+  outputs = { self, nixpkgs, flake-utils, interceptty-src, ... }:
+    flake-utils.lib.eachSystem [
+      "x86_64-linux" "i686-linux" "aarch64-linux"
+    ] (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+        interceptty = pkgs.stdenv.mkDerivation {
+          name = "interceptty";
+
+          src = interceptty-src;
+
+          enableParallelBuilding = true;
+
+          nativeBuildInputs = [ pkgs.autoreconfHook ];
+
+          checkPhase = ''
+            ./test
+          '';
+        };
+
+      in
+      {
+        #packages.default = pkgs.callPackage ./ethercat.nix { inherit kernel; };
+        #packages.ethercat = pkgs.callPackage ./ethercat.nix { inherit kernel; };
+        packages.default = interceptty;
+        packages.interceptty = interceptty;
+      }
+    );
+}