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/ppl/default.nix

@@ -0,0 +1,61 @@
+{ fetchurl, fetchpatch, lib, stdenv, gmpxx, perl, gnum4 }:
+
+let version = "1.2"; in
+
+stdenv.mkDerivation {
+  pname = "ppl";
+  inherit version;
+
+  src = fetchurl {
+    url = "http://bugseng.com/products/ppl/download/ftp/releases/${version}/ppl-${version}.tar.bz2";
+    sha256 = "1wgxcbgmijgk11df43aiqfzv31r3bkxmgb4yl68g21194q60nird";
+  };
+
+  patches = [(fetchpatch {
+    name = "clang5-support.patch";
+    url = "https://git.sagemath.org/sage.git/plain/build/pkgs/ppl/patches/clang5-support.patch?h=9.2";
+    sha256 = "1zj90hm25pkgvk4jlkfzh18ak9b98217gbidl3731fdccbw6hr87";
+  })];
+
+  nativeBuildInputs = [ perl gnum4 ];
+  propagatedBuildInputs = [ gmpxx ];
+
+  configureFlags = [ "--disable-watchdog" ] ++
+    lib.optionals stdenv.isDarwin [
+      "CPPFLAGS=-fexceptions"
+      "--disable-ppl_lcdd" "--disable-ppl_lpsol" "--disable-ppl_pips"
+    ];
+
+  # Beware!  It took ~6 hours to compile PPL and run its tests on a 1.2 GHz
+  # x86_64 box.  Nevertheless, being a dependency of GCC, it probably ought
+  # to be tested.
+  doCheck = false;
+
+  enableParallelBuilding = true;
+
+  meta = {
+    description = "The Parma Polyhedra Library";
+
+    longDescription = ''
+      The Parma Polyhedra Library (PPL) provides numerical abstractions
+      especially targeted at applications in the field of analysis and
+      verification of complex systems.  These abstractions include convex
+      polyhedra, defined as the intersection of a finite number of (open or
+      closed) halfspaces, each described by a linear inequality (strict or
+      non-strict) with rational coefficients; some special classes of
+      polyhedra shapes that offer interesting complexity/precision tradeoffs;
+      and grids which represent regularly spaced points that satisfy a set of
+      linear congruence relations.  The library also supports finite
+      powersets and products of (any kind of) polyhedra and grids and a mixed
+      integer linear programming problem solver using an exact-arithmetic
+      version of the simplex algorithm.
+    '';
+
+    homepage = "http://bugseng.com/products/ppl/";
+
+    license = lib.licenses.gpl3Plus;
+
+    maintainers = [ ];
+    platforms = lib.platforms.unix;
+  };
+}