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/graphics/leocad/default.nix

@@ -0,0 +1,64 @@
+{ lib
+, mkDerivation
+, fetchFromGitHub
+, fetchurl
+, povray
+, qmake
+, qttools
+, substituteAll
+, zlib
+}:
+
+/*
+To use aditional parts libraries
+set the variable LEOCAD_LIB=/path/to/libs/ or use option -l /path/to/libs/
+*/
+
+let
+  parts = fetchurl {
+    url = "https://web.archive.org/web/20210705153544/https://www.ldraw.org/library/updates/complete.zip";
+    sha256 = "sha256-PW3XCbFwRaNkx4EgCnl2rXH7QgmpNgjTi17kZ5bladA=";
+  };
+
+in
+mkDerivation rec {
+  pname = "leocad";
+  version = "21.06";
+
+  src = fetchFromGitHub {
+    owner = "leozide";
+    repo = "leocad";
+    rev = "v${version}";
+    sha256 = "1ifbxngkbmg6d8vv08amxbnfvlyjdwzykrjp98lbwvgb0b843ygq";
+  };
+
+  nativeBuildInputs = [ qmake qttools ];
+
+  buildInputs = [ zlib ];
+
+  propagatedBuildInputs = [ povray ];
+
+  patches = [
+    (substituteAll {
+      src = ./povray.patch;
+      inherit povray;
+    })
+  ];
+
+  qmakeFlags = [
+    "INSTALL_PREFIX=${placeholder "out"}"
+    "DISABLE_UPDATE_CHECK=1"
+  ];
+
+  qtWrapperArgs = [
+    "--set-default LEOCAD_LIB ${parts}"
+  ];
+
+  meta = with lib; {
+    description = "CAD program for creating virtual LEGO models";
+    homepage = "https://www.leocad.org/";
+    license = licenses.gpl2Only;
+    maintainers = with maintainers; [ peterhoeg ];
+    platforms = platforms.linux;
+  };
+}