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/development/tools/build-managers/waf/default.nix

@@ -0,0 +1,44 @@
+{ lib, stdenv, fetchFromGitLab, python3, ensureNewerSourcesForZipFilesHook
+# optional list of extra waf tools, e.g. `[ "doxygen" "pytest" ]`
+, withTools ? null
+}:
+let
+  wafToolsArg = with lib.strings;
+    optionalString (!isNull withTools) " --tools=\"${concatStringsSep "," withTools}\"";
+in
+stdenv.mkDerivation rec {
+  pname = "waf";
+  version = "2.0.23";
+
+  src = fetchFromGitLab {
+    owner = "ita1024";
+    repo = "waf";
+    rev = "${pname}-${version}";
+    sha256 = "sha256-AASjkXb3eCVjbuT0GOwhagoNHxG7/XP1Mj0i1U4j13Q=";
+  };
+
+  nativeBuildInputs = [ python3 ensureNewerSourcesForZipFilesHook ];
+
+  # waf bin has #!/usr/bin/env python
+  buildInputs = [ python3 ];
+
+  configurePhase = ''
+    python waf-light configure
+  '';
+  buildPhase = ''
+    python waf-light build${wafToolsArg}
+  '';
+  installPhase = ''
+    install -D waf $out/bin/waf
+  '';
+
+  strictDeps = true;
+
+  meta = with lib; {
+    description = "Meta build system";
+    homepage    = "https://waf.io";
+    license     = licenses.bsd3;
+    platforms   = platforms.all;
+    maintainers = with maintainers; [ vrthra ];
+  };
+}