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/development/misc/msp430/mspdebug.nix

@@ -0,0 +1,63 @@
+{ lib, stdenv
+, fetchFromGitHub
+, autoPatchelfHook
+, libusb-compat-0_1
+, readline ? null
+, enableReadline ? true
+, hidapi ? null
+, pkg-config ? null
+, mspds ? null
+, enableMspds ? false
+}:
+
+assert stdenv.isDarwin -> hidapi != null && pkg-config != null;
+assert enableReadline -> readline != null;
+assert enableMspds -> mspds != null;
+
+stdenv.mkDerivation rec {
+  version = "0.25";
+  pname = "mspdebug";
+  src = fetchFromGitHub {
+    owner = "dlbeer";
+    repo = "mspdebug";
+    rev = "v${version}";
+    sha256 = "0prgwb5vx6fd4bj12ss1bbb6axj2kjyriyjxqrzd58s5jyyy8d3c";
+  };
+
+  enableParallelBuilding = true;
+  nativeBuildInputs = lib.optional stdenv.isDarwin pkg-config
+  ++ lib.optional (enableMspds && stdenv.isLinux) autoPatchelfHook;
+  buildInputs = [ libusb-compat-0_1 ]
+  ++ lib.optional stdenv.isDarwin hidapi
+  ++ lib.optional enableReadline readline;
+
+  postPatch = lib.optionalString stdenv.isDarwin ''
+    # TODO: remove once a new 0.26+ release is made
+    substituteInPlace drivers/tilib_api.c --replace .so ${stdenv.hostPlatform.extensions.sharedLibrary}
+
+    # Makefile only uses pkg-config if it detects homebrew
+    substituteInPlace Makefile --replace brew true
+  '';
+
+  # TODO: wrap with MSPDEBUG_TILIB_PATH env var instead of these rpath fixups in 0.26+
+  runtimeDependencies = lib.optional enableMspds mspds;
+  postFixup = lib.optionalString (enableMspds && stdenv.isDarwin) ''
+    # autoPatchelfHook only works on linux so...
+    for dep in $runtimeDependencies; do
+      install_name_tool -add_rpath $dep/lib $out/bin/$pname
+    done
+  '';
+
+  installFlags = [ "PREFIX=$(out)" "INSTALL=install" ];
+  makeFlags = [ "UNAME_S=$(unameS)" ] ++
+    lib.optional (!enableReadline) "WITHOUT_READLINE=1";
+  unameS = lib.optionalString stdenv.isDarwin "Darwin";
+
+  meta = with lib; {
+    description = "A free programmer, debugger, and gdb proxy for MSP430 MCUs";
+    homepage = "https://dlbeer.co.nz/mspdebug/";
+    license = licenses.gpl2;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ aerialx ];
+  };
+}