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/libiio/default.nix

@@ -0,0 +1,67 @@
+{ stdenv
+, fetchFromGitHub
+, cmake
+, flex
+, bison
+, libxml2
+, python
+, libusb1
+, runtimeShell
+, lib
+}:
+
+stdenv.mkDerivation rec {
+  pname = "libiio";
+  version = "0.21";
+
+  outputs = [ "out" "lib" "dev" "python" ];
+
+  src = fetchFromGitHub {
+    owner = "analogdevicesinc";
+    repo = "libiio";
+    rev = "v${version}";
+    sha256 = "0psw67mzysdb8fkh8xpcwicm7z94k8plkcc8ymxyvl6inshq0mc7";
+  };
+
+  # Revert after https://github.com/NixOS/nixpkgs/issues/125008 is
+  # fixed properly
+  patches = [ ./cmake-fix-libxml2-find-package.patch ];
+
+  nativeBuildInputs = [
+    cmake
+    flex
+    bison
+  ];
+
+  buildInputs = [
+    python
+    libxml2
+    libusb1
+  ] ++ lib.optional python.isPy3k python.pkgs.setuptools;
+
+  cmakeFlags = [
+    "-DUDEV_RULES_INSTALL_DIR=${placeholder "out"}/lib/udev/rules.d"
+    "-DPYTHON_BINDINGS=on"
+  ];
+
+  postPatch = ''
+    # Hardcode path to the shared library into the bindings.
+    sed "s#@libiio@#$lib/lib/libiio${stdenv.hostPlatform.extensions.sharedLibrary}#g" ${./hardcode-library-path.patch} | patch -p1
+
+    substituteInPlace libiio.rules.cmakein \
+      --replace /bin/sh ${runtimeShell}
+  '';
+
+  postInstall = ''
+    # Move Python bindings into a separate output.
+    moveToOutput ${python.sitePackages} "$python"
+  '';
+
+  meta = with lib; {
+    description = "API for interfacing with the Linux Industrial I/O Subsystem";
+    homepage = "https://github.com/analogdevicesinc/libiio";
+    license = licenses.lgpl21Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ thoughtpolice ];
+  };
+}