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/applications/science/electronics/openems/default.nix

@@ -0,0 +1,70 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, csxcad
+, fparser
+, tinyxml
+, hdf5
+, vtk
+, boost
+, zlib
+, cmake
+, octave
+, gl2ps
+, mpi
+, withQcsxcad ? true
+, withMPI ? false
+, withHyp2mat ? true
+, qcsxcad
+, hyp2mat
+}:
+
+stdenv.mkDerivation {
+  pname = "openems";
+  version = "unstable-2020-02-15";
+
+  src = fetchFromGitHub {
+    owner = "thliebig";
+    repo = "openEMS";
+    rev = "ba793ac84e2f78f254d6d690bb5a4c626326bbfd";
+    sha256 = "1dca6b6ccy771irxzsj075zvpa3dlzv4mjb8xyg9d889dqlgyl45";
+  };
+
+  nativeBuildInputs = [
+    cmake
+  ];
+
+  cmakeFlags = lib.optionals withMPI [ "-DWITH_MPI=ON" ];
+
+  buildInputs = [
+    fparser
+    tinyxml
+    hdf5
+    vtk
+    boost
+    zlib
+    csxcad
+    (octave.override { inherit hdf5; }) ]
+    ++ lib.optionals withQcsxcad [ qcsxcad ]
+    ++ lib.optionals withMPI [ mpi ]
+    ++ lib.optionals withHyp2mat [ hyp2mat ];
+
+  postFixup = ''
+    substituteInPlace $out/share/openEMS/matlab/setup.m \
+      --replace /usr/lib ${hdf5}/lib \
+      --replace /usr/include ${hdf5}/include
+
+    ${octave}/bin/mkoctfile -L${hdf5}/lib -I${hdf5}/include \
+      -lhdf5 $out/share/openEMS/matlab/h5readatt_octave.cc \
+      -o $out/share/openEMS/matlab/h5readatt_octave.oct
+  '';
+
+  meta = with lib; {
+    description = "Open Source Electromagnetic Field Solver";
+    homepage = "http://openems.de/index.php/Main_Page.html";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ matthuszagh ];
+    platforms = platforms.linux;
+    badPlatforms = platforms.aarch64;
+  };
+}