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/libraries/symengine/default.nix

@@ -0,0 +1,52 @@
+{ lib, stdenv
+, fetchFromGitHub
+, cmake
+, gmp
+, flint
+, mpfr
+, libmpc
+, catch
+}:
+
+stdenv.mkDerivation rec {
+  pname = "symengine";
+  version = "0.9.0";
+
+  src = fetchFromGitHub {
+    owner = "symengine";
+    repo = "symengine";
+    rev = "v${version}";
+    sha256 = "sha256-5KpxBusJCuwrfFWHbrRKlH6Ic7YivYqz2m+BCbNfZp0=";
+  };
+
+  postPatch = ''
+    cp ${catch}/include/catch/catch.hpp symengine/utilities/catch/catch.hpp
+  '';
+
+  nativeBuildInputs = [ cmake ];
+
+  buildInputs = [ gmp flint mpfr libmpc ];
+
+  cmakeFlags = [
+    "-DWITH_FLINT=ON"
+    "-DINTEGER_CLASS=flint"
+    "-DWITH_SYMENGINE_THREAD_SAFE=yes"
+    "-DWITH_MPC=yes"
+    "-DBUILD_FOR_DISTRIBUTION=yes"
+  ];
+
+  doCheck = true;
+
+  checkPhase = ''
+    ctest
+  '';
+
+  meta = with lib; {
+    description = "A fast symbolic manipulation library";
+    homepage = "https://github.com/symengine/symengine";
+    platforms = platforms.unix ++ platforms.windows;
+    license = licenses.bsd3;
+    maintainers = [ maintainers.costrouc ];
+  };
+
+}