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/pyisy/default.nix

@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, requests
+, python-dateutil
+, aiohttp
+}:
+
+buildPythonPackage rec {
+  pname = "pyisy";
+  version = "3.0.6";
+
+  src = fetchFromGitHub {
+    owner = "automicus";
+    repo = "PyISY";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-4thCP9Xc3dtL6IaP863sW/L4aj4+QIPFv6p0kFLGh7E=";
+  };
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "setuptools-git-version" "" \
+      --replace 'version_format="{tag}"' 'version="${version}"'
+  '';
+
+  propagatedBuildInputs = [
+    aiohttp
+    python-dateutil
+    requests
+  ];
+
+  # no tests implemented
+  doCheck = false;
+
+  pythonImportsCheck = [ "pyisy" ];
+
+  meta = with lib; {
+    description = "Python module to talk to ISY994 from UDI";
+    homepage = "https://github.com/automicus/PyISY";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ dotlambda ];
+  };
+}