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/misc/deco/default.nix

@@ -0,0 +1,35 @@
+{ lib, stdenv, fetchFromGitHub, scsh, feh, xorg }:
+
+stdenv.mkDerivation rec {
+  pname = "deco";
+  version = "unstable-2019-04-03";
+
+  src = fetchFromGitHub {
+    owner = "ebzzry";
+    repo = pname;
+    rev = "dd8ec7905bc85d085eb2ee3bddabea451054288c";
+    sha256 = "sha256-/3GeNvWOCRPOYTUbodXDUxR5QVDEyx6x2Jt5PxsPdvk=";
+  };
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp ${pname} $out/bin
+    chmod +x $out/bin/${pname}
+  '';
+
+  postFixup = ''
+    substituteInPlace $out/bin/deco --replace "/usr/bin/env scsh" "${scsh}/bin/scsh"
+    substituteInPlace $out/bin/deco --replace "feh" "${feh}/bin/feh"
+    substituteInPlace $out/bin/deco --replace "xdpyinfo" "${xorg.xdpyinfo}/bin/xdpyinfo"
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/ebzzry/deco";
+    description = "A simple root image setter";
+    license = licenses.mit;
+    maintainers = [ maintainers.ebzzry ];
+    platforms = platforms.unix;
+  };
+
+  dontBuild = true;
+}