uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/os-specific/darwin/khd/default.nix

@@ -0,0 +1,45 @@
+{ lib, stdenv, fetchFromGitHub, fetchpatch, Carbon, Cocoa }:
+
+stdenv.mkDerivation rec {
+  pname = "khd";
+  version = "3.0.0";
+
+  src = fetchFromGitHub {
+    owner = "koekeishiya";
+    repo = "khd";
+    rev = "v${version}";
+    sha256 = "0nzfhknv1s71870w2dk9dy56a3g5zsbjphmfrz0vsvi438g099r4";
+  };
+
+  patches = [
+    # Fixes build issues, remove with >3.0.0
+    (fetchpatch {
+      url = "https://github.com/koekeishiya/khd/commit/4765ae0b4c7d4ca56319dc92ff54393cd9e03fbc.patch";
+      sha256 = "0kvf5hxi5bf6pf125qib7wn7hys0ag66zzpp4srj1qa87lxyf7np";
+    })
+  ];
+
+  buildInputs = [ Carbon Cocoa ];
+
+  buildPhase = ''
+    make install
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp bin/khd $out/bin/khd
+
+    mkdir -p $out/Library/LaunchDaemons
+    cp ${./org.nixos.khd.plist} $out/Library/LaunchDaemons/org.nixos.khd.plist
+    substituteInPlace $out/Library/LaunchDaemons/org.nixos.khd.plist --subst-var out
+  '';
+
+  meta = with lib; {
+    description = "A simple modal hotkey daemon for OSX";
+    homepage = "https://github.com/koekeishiya/khd";
+    downloadPage = "https://github.com/koekeishiya/khd/releases";
+    platforms = platforms.darwin;
+    maintainers = with maintainers; [ lnl7 ];
+    license = licenses.mit;
+  };
+}