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/libpurecool/default.nix

@@ -0,0 +1,47 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, netifaces
+, paho-mqtt
+, pycryptodome
+, requests
+, six
+, zeroconf
+}:
+
+buildPythonPackage rec {
+  pname = "libpurecool";
+  version = "0.6.4";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1kwbinbg0i4fca1bpx6jwa1fiw71vg0xa89jhq4pmnl5cn9c8kqx";
+  };
+
+  # Remove vendorized zeroconf, https://github.com/etheralm/libpurecool/issues/33
+  postPatch = ''
+    rm libpurecool/zeroconf.py
+    substituteInPlace libpurecool/dyson_pure_cool_link.py \
+      --replace "from .zeroconf import ServiceBrowser, Zeroconf" "from zeroconf import ServiceBrowser, Zeroconf"
+  '';
+
+  propagatedBuildInputs = [
+    netifaces
+    paho-mqtt
+    pycryptodome
+    requests
+    six
+    zeroconf
+  ];
+
+  # Tests are only present in repo, https://github.com/etheralm/libpurecool/issues/36
+  doCheck = false;
+  pythonImportsCheck = [ "libpurecool" ];
+
+  meta = with lib; {
+    description = "Python library for Dyson devices";
+    homepage = "http://libpurecool.readthedocs.io";
+    license = with licenses; [ asl20 ];
+    maintainers = with maintainers; [ fab ];
+  };
+}