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/tools/backup/luckybackup/default.nix

@@ -0,0 +1,45 @@
+{ mkDerivation, lib, fetchurl
+, pkg-config, libtool, qmake
+, rsync, ssh
+}:
+
+with lib;
+mkDerivation rec {
+  pname = "luckybackup";
+  version = "0.5.0";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/project/luckybackup/${version}/source/${pname}-${version}.tar.gz";
+    sha256 = "0nwjsk1j33pm8882jbj8h6nxn6n5ab9dxqpqkay65pfbhcjay0g8";
+  };
+
+  buildInputs = [ rsync ssh ];
+
+  nativeBuildInputs = [ pkg-config libtool qmake ];
+
+  prePatch = ''
+    for File in luckybackup.pro menu/luckybackup-pkexec \
+        menu/luckybackup-su.desktop menu/luckybackup.desktop \
+        menu/net.luckybackup.su.policy src/functions.cpp \
+        src/global.cpp src/scheduleDialog.cpp; do
+      substituteInPlace $File --replace "/usr" "$out"
+    done
+  '';
+
+  meta = {
+    description = "A powerful, fast and reliable backup & sync tool";
+    longDescription = ''
+      luckyBackup is an application for data back-up and synchronization
+      powered by the rsync tool.
+
+      It is simple to use, fast (transfers over only changes made and not
+      all data), safe (keeps your data safe by checking all declared directories
+      before proceeding in any data manipulation), reliable and fully
+      customizable.
+    '';
+    homepage = "http://luckybackup.sourceforge.net/";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ AndersonTorres ];
+    platforms = platforms.linux;
+  };
+}