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/tools/analysis/coan/default.nix

@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchurl, perl }:
+
+stdenv.mkDerivation rec {
+  version = "6.0.1";
+  pname = "coan";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/project/coan2/v${version}/${pname}-${version}.tar.gz";
+    sha256 = "1d041j0nd1hc0562lbj269dydjm4rbzagdgzdnmwdxr98544yw44";
+  };
+
+  nativeBuildInputs = [ perl ];
+
+  NIX_CFLAGS_COMPILE = [
+    "-std=c++11"
+  ];
+
+  enableParallelBuilding = true;
+
+  postInstall = ''
+    mv -v $out/share/man/man1/coan.1.{1,gz}
+  '';
+
+  meta = with lib; {
+    broken = stdenv.isDarwin;
+    description = "The C preprocessor chainsaw";
+    longDescription = ''
+      A software engineering tool for analysing preprocessor-based
+      configurations of C or C++ source code. Its principal use is to simplify
+      a body of source code by eliminating any parts that are redundant with
+      respect to a specified configuration. Dead code removal is an
+      application of this sort.
+    '';
+    homepage = "http://coan2.sourceforge.net/";
+    license = licenses.bsd3;
+    platforms = platforms.all;
+  };
+}