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/kde/okular.nix

@@ -0,0 +1,37 @@
+{
+  stdenv, mkDerivation, lib,
+  extra-cmake-modules, kdoctools,
+  breeze-icons, chmlib ? null, discount, djvulibre, ebook_tools, kactivities,
+  karchive, kbookmarks, kcompletion, kconfig, kconfigwidgets, kcoreaddons,
+  kdbusaddons, kdegraphics-mobipocket, kiconthemes, kjs, khtml, kio, kparts,
+  kpty, kpurpose, kwallet, kwindowsystem, libkexiv2, libspectre, libzip, phonon, poppler,
+  qca-qt5, qtdeclarative, qtsvg, threadweaver, kcrash
+}:
+
+mkDerivation {
+  pname = "okular";
+  nativeBuildInputs = [ extra-cmake-modules kdoctools ];
+  buildInputs = [
+    breeze-icons discount djvulibre ebook_tools kactivities karchive kbookmarks
+    kcompletion kconfig kconfigwidgets kcoreaddons kdbusaddons
+    kdegraphics-mobipocket kiconthemes kjs khtml kio kparts kpty kpurpose kwallet
+    kwindowsystem libkexiv2 libspectre libzip phonon poppler qca-qt5
+    qtdeclarative qtsvg threadweaver kcrash
+  ] ++ lib.optional (!stdenv.isAarch64) chmlib;
+
+  # InitialPreference values are too high and end up making okular
+  # default for anything considered text/plain. Resetting to 1, which
+  # is the default.
+  postPatch = ''
+    substituteInPlace generators/txt/okularApplication_txt.desktop \
+      --replace InitialPreference=3 InitialPreference=1
+  '';
+
+  meta = with lib; {
+    homepage = "http://www.kde.org";
+    description = "KDE document viewer";
+    license = with licenses; [ gpl2 lgpl21 fdl12 bsd3 ];
+    maintainers = with maintainers; [ ttuegel turion ];
+    platforms = lib.platforms.linux;
+  };
+}