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/networking/sync/unison/default.nix

@@ -0,0 +1,75 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, ocamlPackages
+, fontschumachermisc
+, xset
+, makeWrapper
+, ncurses
+, gnugrep
+, copyDesktopItems
+, makeDesktopItem
+, enableX11 ? true
+}:
+
+stdenv.mkDerivation rec {
+  pname = "unison";
+  version = "2.52.0";
+
+  src = fetchFromGitHub {
+    owner = "bcpierce00";
+    repo = "unison";
+    rev = "v${version}";
+    sha256 = "sha256-YCuXkHqY+JHsguvst2UkI/6YlFt3iTvchO8PQuS15nI=";
+  };
+
+  nativeBuildInputs = [ makeWrapper ]
+    ++ lib.optional enableX11 copyDesktopItems;
+  buildInputs = [ ocamlPackages.ocaml ncurses ];
+
+  preBuild = lib.optionalString enableX11 ''
+    sed -i "s|\(OCAMLOPT=.*\)$|\1 -I $(echo "${ocamlPackages.lablgtk}"/lib/ocaml/*/site-lib/lablgtk2)|" src/Makefile.OCaml
+  '' + ''
+    echo -e '\ninstall:\n\tcp $(FSMONITOR)$(EXEC_EXT) $(INSTALLDIR)' >> src/fsmonitor/linux/Makefile
+  '';
+
+  makeFlags = [
+    "INSTALLDIR=$(out)/bin/"
+    "UISTYLE=${if enableX11 then "gtk2" else "text"}"
+  ] ++ lib.optional (!ocamlPackages.ocaml.nativeCompilers) "NATIVE=false";
+
+  preInstall = ''
+    mkdir -p $out/bin
+  '';
+
+  postInstall = lib.optionalString enableX11 ''
+    for i in $(cd $out/bin && ls); do
+      wrapProgram $out/bin/$i \
+        --run "[ -n \"\$DISPLAY\" ] && (${xset}/bin/xset q | ${gnugrep}/bin/grep -q \"${fontschumachermisc}\" || ${xset}/bin/xset +fp \"${fontschumachermisc}/lib/X11/fonts/misc\")"
+    done
+
+    install -D $src/icons/U.svg $out/share/icons/hicolor/scalable/apps/unison.svg
+  '';
+
+  dontStrip = !ocamlPackages.ocaml.nativeCompilers;
+
+  desktopItems = lib.optional enableX11 (makeDesktopItem {
+    name = pname;
+    desktopName = "Unison";
+    comment = "Bidirectional file synchronizer";
+    genericName = "File synchronization tool";
+    exec = "unison";
+    icon = "unison";
+    categories = [ "Utility" "FileTools" "GTK" ];
+    startupNotify = true;
+    startupWMClass = "Unison";
+  });
+
+  meta = with lib; {
+    homepage = "https://www.cis.upenn.edu/~bcpierce/unison/";
+    description = "Bidirectional file synchronizer";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ viric ];
+    platforms = platforms.unix;
+  };
+}