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/ocaml-modules/cpdf/default.nix

@@ -0,0 +1,41 @@
+{ lib, stdenv, fetchFromGitHub, ocaml, findlib, camlpdf, ncurses }:
+
+if lib.versionOlder ocaml.version "4.10"
+then throw "cpdf is not available for OCaml ${ocaml.version}"
+else
+
+stdenv.mkDerivation rec {
+  pname = "ocaml${ocaml.version}-cpdf";
+  version = "2.5";
+
+  src = fetchFromGitHub {
+    owner = "johnwhitington";
+    repo = "cpdf-source";
+    rev = "v${version}";
+    sha256 = "sha256:1qmx229nij7g6qmiacmyy4mcgx3k9509p4slahivshqm79d6wiwl";
+  };
+
+  nativeBuildInputs = [ ocaml findlib ];
+  buildInputs = [ ncurses ];
+  propagatedBuildInputs = [ camlpdf ];
+
+  strictDeps = true;
+
+  preInstall = ''
+    mkdir -p $OCAMLFIND_DESTDIR
+    mkdir -p $out/bin
+    cp cpdf $out/bin
+    mkdir -p $out/share/
+    cp -r doc $out/share
+    cp cpdfmanual.pdf $out/share/doc/cpdf/
+  '';
+
+  meta = with lib; {
+    description = "PDF Command Line Tools";
+    homepage = "https://www.coherentpdf.com/";
+    license = licenses.unfree;
+    maintainers = [ maintainers.vbgl ];
+    mainProgram = "cpdf";
+    inherit (ocaml.meta) platforms;
+  };
+}