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/math/getdp/default.nix

@@ -0,0 +1,32 @@
+{ lib, stdenv, fetchurl, cmake, gfortran, blas, lapack, mpi, petsc, python3 }:
+
+stdenv.mkDerivation rec {
+  pname = "getdp";
+  version = "3.4.0";
+  src = fetchurl {
+    url = "http://getdp.info/src/getdp-${version}-source.tgz";
+    sha256 = "sha256-d5YxJgtMf94PD6EHvIXpPBFPKC+skI/2v1K5Sad51hA=";
+  };
+
+  inherit (petsc) mpiSupport;
+  nativeBuildInputs = [ cmake python3 ];
+  buildInputs = [ gfortran blas lapack petsc ]
+    ++ lib.optional mpiSupport mpi
+  ;
+  cmakeFlags = lib.optional mpiSupport "-DENABLE_MPI=1";
+
+  meta = with lib; {
+    description = "A General Environment for the Treatment of Discrete Problems";
+    longDescription = ''
+      GetDP is a free finite element solver using mixed elements to discretize
+      de Rham-type complexes in one, two and three dimensions.  The main
+      feature of GetDP is the closeness between the input data defining
+      discrete problems (written by the user in ASCII data files) and the
+      symbolic mathematical expressions of these problems.
+    '';
+    homepage = "http://getdp.info/";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ ];
+    platforms = platforms.linux;
+  };
+}