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/tools/misc/rockbox-utility/default.nix

@@ -0,0 +1,79 @@
+{ lib
+, stdenv
+, fetchurl
+, cryptopp
+, libusb1
+, makeWrapper
+, pkg-config
+, qt5
+, withEspeak ? false, espeak ? null
+}:
+
+stdenv.mkDerivation  rec {
+  pname = "rockbox-utility";
+  version = "1.4.1";
+
+  src = fetchurl {
+    url = "https://download.rockbox.org/rbutil/source/RockboxUtility-v${version}-src.tar.bz2";
+    hash = "sha256-PhlJ+fNY4/Qjoc72zV9WO+kNqF5bZQuwOh4EpAJwqX4=";
+  };
+
+  nativeBuildInputs = [
+    makeWrapper
+    pkg-config
+    qt5.qmake
+    qt5.wrapQtAppsHook
+  ];
+
+  buildInputs = [
+    cryptopp
+    libusb1
+    qt5.qtbase
+    qt5.qttools
+  ]
+  ++ lib.optional withEspeak espeak;
+
+  postPatch = ''
+    sed -i rbutil/rbutilqt/rbutilqt.pro \
+        -e '/^lrelease.commands =/ s|$$\[QT_INSTALL_BINS\]/lrelease -silent|${lib.getDev qt5.qttools}/bin/lrelease|'
+  '';
+
+  preConfigure = ''
+    cd rbutil/rbutilqt
+    lrelease rbutilqt.pro
+  '';
+
+  # Workaround build failure on -fno-common toolchains like upstream
+  # gcc-10. Otherwise build fails as:
+  #   ld: libmkimxboot.a(elf.c.o):utils/imxtools/sbtools/misc.h:43: multiple definition of `g_nr_keys';
+  #     libmkimxboot.a(mkimxboot.c.o):utils/imxtools/sbtools/misc.h:43: first defined here
+  # TODO: try to remove with 1.5.1 update.
+  NIX_CFLAGS_COMPILE = "-fcommon";
+
+  installPhase = ''
+    runHook preInstall
+
+    install -Dm755 RockboxUtility $out/bin/rockboxutility
+    ln -s $out/bin/rockboxutility $out/bin/RockboxUtility
+    wrapProgram $out/bin/rockboxutility \
+    ${lib.optionalString withEspeak ''
+      --prefix PATH : ${espeak}/bin
+    ''}
+
+    runHook postInstall
+  '';
+
+  # `make build/rcc/qrc_rbutilqt-lang.cpp` fails with
+  #      RCC: Error in 'rbutilqt-lang.qrc': Cannot find file 'lang/rbutil_cs.qm'
+  # Do not add `lrelease rbutilqt.pro` into preConfigure, otherwise `make lrelease`
+  # may clobber the files read by the parallel `make build/rcc/qrc_rbutilqt-lang.cpp`.
+  enableParallelBuilding = false;
+
+  meta = with lib; {
+    homepage = "https://www.rockbox.org";
+    description = "Open source firmware for digital music players";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ AndersonTorres goibhniu ];
+    platforms = platforms.linux;
+  };
+}