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/libchamplain/default.nix

@@ -0,0 +1,50 @@
+{ fetchurl, lib, stdenv, meson, ninja, vala, gtk-doc, docbook_xsl, docbook_xml_dtd_412, pkg-config, glib, gtk3, cairo, sqlite, gnome
+, clutter-gtk, libsoup, gobject-introspection /*, libmemphis */ }:
+
+stdenv.mkDerivation rec {
+  pname = "libchamplain";
+  version = "0.12.20";
+
+  src = fetchurl {
+    url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
+    sha256 = "0rihpb0npqpihqcdz4w03rq6xl7jdckfqskvv9diq2hkrnzv8ch2";
+  };
+
+  outputs = [ "out" "dev" "devdoc" ];
+
+  nativeBuildInputs = [ meson ninja pkg-config gobject-introspection vala gtk-doc docbook_xsl docbook_xml_dtd_412 ];
+
+  buildInputs = [ sqlite libsoup ];
+
+  propagatedBuildInputs = [ glib gtk3 cairo clutter-gtk ];
+
+  mesonFlags = [
+    "-Dgtk_doc=true"
+    "-Dvapi=true"
+  ];
+
+  passthru = {
+    updateScript = gnome.updateScript {
+      packageName = pname;
+      versionPolicy = "odd-unstable";
+    };
+  };
+
+  meta = with lib; {
+    homepage = "https://wiki.gnome.org/Projects/libchamplain";
+    license = licenses.lgpl2Plus;
+
+    description = "C library providing a ClutterActor to display maps";
+
+    longDescription = ''
+      libchamplain is a C library providing a ClutterActor to display
+       maps.  It also provides a GTK widget to display maps in GTK
+       applications.  Python and Perl bindings are also available.  It
+       supports numerous free map sources such as OpenStreetMap,
+       OpenCycleMap, OpenAerialMap, and Maps for free.
+    '';
+
+     maintainers = teams.gnome.members;
+     platforms = platforms.gnu ++ platforms.linux;  # arbitrary choice
+  };
+}