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/watchgod/default.nix

@@ -0,0 +1,32 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, anyio
+}:
+
+buildPythonPackage rec {
+  pname = "watchgod";
+  version = "0.8.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-wS0V8999EedAcE5FOYJ3918dePRq1Zyp11Bb/YuNMIY=";
+  };
+
+  propagatedBuildInputs = [
+    anyio
+  ];
+
+  # no tests in release
+  doCheck = false;
+
+  pythonImportsCheck = [ "watchgod" ];
+
+  meta = with lib; {
+    description = "Simple, modern file watching and code reload in python";
+    homepage = "https://github.com/samuelcolvin/watchgod";
+    license = licenses.mit;
+    maintainers = with maintainers; [ globin ];
+  };
+
+}