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/libraries/libnixxml/default.nix

@@ -0,0 +1,61 @@
+{ fetchFromGitHub, lib, stdenv, autoreconfHook, pkg-config, libxml2, gd, glib, getopt, libxslt, nix, bash}:
+
+stdenv.mkDerivation {
+  pname = "libnixxml";
+  version = "unstable-2020-06-25";
+
+  src = fetchFromGitHub {
+    owner = "svanderburg";
+    repo = "libnixxml";
+    rev = "54c04a5fdbc8661b2445a7527f499e0a77753a1a";
+    sha256 = "sha256-HKQnCkO1TDs1e0MDil0Roq4YRembqRHQvb7lK3GAftQ=";
+  };
+
+  prePatch = ''
+    # Remove broken test
+    substituteInPlace tests/draw/Makefile.am \
+      --replace "draw-wrong.sh" ""
+    rm tests/draw/draw-wrong.sh
+
+    # Fix bash path
+    substituteInPlace scripts/nixexpr2xml.in \
+      --replace "/bin/bash" "${bash}/bin/bash"
+  '';
+
+  preAutoreconf = ''
+    # Copied from bootstrap script
+    ln -s README.md README
+    mkdir -p config
+  '';
+
+  configureFlags = [ "--with-gd" "--with-glib" ];
+  CFLAGS = "-Wall";
+
+  strictDeps = true;
+  nativeBuildInputs = [
+    autoreconfHook
+    pkg-config
+    getopt
+    libxslt
+  ];
+  buildInputs = [
+    bash
+    libxml2
+    gd.dev
+    glib
+    nix
+  ];
+  checkInputs = [
+    nix
+  ];
+
+  doCheck = true;
+
+  meta = with lib; {
+    description = "XML-based Nix-friendly data integration library";
+    homepage = "https://github.com/svanderburg/libnixxml";
+    license = licenses.mit;
+    maintainers = with maintainers; [ tomberek ];
+    platforms = platforms.unix;
+  };
+}