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/python-modules/liquidctl/default.nix

@@ -0,0 +1,68 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pythonOlder
+, installShellFiles
+, docopt
+, hidapi
+, pyusb
+, smbus-cffi
+, i2c-tools
+, pytestCheckHook
+, colorlog
+}:
+
+buildPythonPackage rec {
+  pname = "liquidctl";
+  version = "1.8.1";
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = pname;
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0cl1xg3rqpn4yjflwcz667pwfjnbq0g41pkg2nak7x9mxqnbdk70";
+  };
+
+  nativeBuildInputs = [ installShellFiles ];
+
+  propagatedBuildInputs = [
+    docopt
+    hidapi
+    pyusb
+    smbus-cffi
+    i2c-tools
+    colorlog
+  ];
+
+  propagatedNativeBuildInputs = [
+    smbus-cffi
+  ];
+
+  outputs = [ "out" "man" ];
+
+  postInstall = ''
+    installManPage liquidctl.8
+    installShellCompletion extra/completions/liquidctl.bash
+
+    mkdir -p $out/lib/udev/rules.d
+    cp extra/linux/71-liquidctl.rules $out/lib/udev/rules.d/.
+  '';
+
+  checkInputs = [ pytestCheckHook ];
+
+  postBuild = ''
+    # needed for pythonImportsCheck
+    export XDG_RUNTIME_DIR=$TMPDIR
+  '';
+
+  pythonImportsCheck = [ "liquidctl" ];
+
+  meta = with lib; {
+    description = "Cross-platform CLI and Python drivers for AIO liquid coolers and other devices";
+    homepage = "https://github.com/liquidctl/liquidctl";
+    changelog = "https://github.com/liquidctl/liquidctl/blob/master/CHANGELOG.md";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ arturcygan evils ];
+  };
+}