gcfflasher: fix darwin build

Author: wegank

pkgs/by-name/gc/gcfflasher/package.nix

@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchFromGitHub,
+  fetchpatch,
   pkg-config,
   libgpiod,
   cmake,
@@ -18,6 +19,13 @@ stdenv.mkDerivation rec {
     hash = "sha256-W1sL3RyauEYAC/Fj0JhNnk0k5DT6Q8qIEuZNke3xNAE=";
   };
 
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/dresden-elektronik/gcfflasher/commit/c1019d7ef2ab55a598ddd938db1b08169b05fc37.patch";
+      hash = "sha256-Frd3Xerkv3QolGCOrTE4AqBPqPHTKjjhk+DzhHABTqo=";
+    })
+  ];
+
   nativeBuildInputs = [
     pkg-config
     cmake