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/csxcad/default.nix

@@ -0,0 +1,47 @@
+{ lib, stdenv
+, fetchFromGitHub
+, cmake
+, fparser
+, tinyxml
+, hdf5
+, cgal_5
+, vtk
+, boost
+, gmp
+, mpfr
+}:
+
+stdenv.mkDerivation rec {
+  pname = "csxcad";
+  version = "unstable-2020-02-08";
+
+  src = fetchFromGitHub {
+    owner = "thliebig";
+    repo = "CSXCAD";
+    rev = "ef6e40931dbd80e0959f37c8e9614c437bf7e518";
+    sha256 = "072s765jyzpdq8qqysdy0dld17m6sr9zfcs0ip2zk8c4imxaysnb";
+  };
+
+  patches = [./searchPath.patch ];
+
+  buildInputs = [
+    cgal_5
+    boost
+    gmp
+    mpfr
+    vtk
+    fparser
+    tinyxml
+    hdf5
+  ];
+
+  nativeBuildInputs = [ cmake ];
+
+  meta = with lib; {
+    description = "A C++ library to describe geometrical objects";
+    homepage = "https://github.com/thliebig/CSXCAD";
+    license = licenses.lgpl3;
+    maintainers = with maintainers; [ matthuszagh ];
+    platforms = platforms.linux;
+  };
+}

pkgs/applications/science/electronics/csxcad/searchPath.patch

@@ -0,0 +1,11 @@
+--- CSXCAD/matlab/searchBinary.m	2019-07-14 09:24:02.154291745 -0700
++++ CSXCAD/matlab/searchBinary.m	2019-07-14 09:20:20.900248280 -0700
+@@ -33,7 +33,7 @@
+
+ % try all search paths
+ for n=1:numel(searchpath)
+-    binary_location = [searchpath{n} name];
++    binary_location = [searchpath{n} filesep name];
+     if exist(binary_location, 'file')
+         return
+     end