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/tools/networking/urlwatch/default.nix

@@ -0,0 +1,42 @@
+{ lib
+, fetchFromGitHub
+, python3Packages
+}:
+
+python3Packages.buildPythonApplication rec {
+  pname = "urlwatch";
+  version = "2.25";
+
+  src = fetchFromGitHub {
+    owner = "thp";
+    repo = "urlwatch";
+    rev = version;
+    hash = "sha256-+ayHMY0gEAVhOgDDh+RfRrUpV0tSX8mMmfPzyg+YSv4=";
+  };
+
+  propagatedBuildInputs = with python3Packages; [
+    appdirs
+    cssselect
+    jq
+    keyring
+    lxml
+    markdown2
+    matrix-client
+    minidb
+    pushbullet
+    pycodestyle
+    pyppeteer
+    pyyaml
+    requests
+  ];
+
+  # no tests
+  doCheck = false;
+
+  meta = with lib; {
+    description = "A tool for monitoring webpages for updates";
+    homepage = "https://thp.io/2008/urlwatch/";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ kmein tv ];
+  };
+}