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/servers/radicale/2.x.nix

@@ -0,0 +1,46 @@
+{ lib, fetchFromGitHub, python3 }:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "Radicale";
+  version = "2.1.12";
+
+  # No tests in PyPI tarball
+  src = fetchFromGitHub {
+    owner = "Kozea";
+    repo = "Radicale";
+    rev = version;
+    sha256 = "14f9ql0fiwapaa4xaslwgk1ah9fzxxan2p1p2rxb4a5iqph1z0cl";
+  };
+
+  # We only want functional tests
+  postPatch = ''
+    sed -i "s/pytest-cov\|pytest-flake8\|pytest-isort//g" setup.py
+    sed -i "/^addopts/d" setup.cfg
+  '';
+
+  propagatedBuildInputs = with python3.pkgs; [
+    vobject
+    python-dateutil
+    passlib
+    setuptools
+  ];
+
+  checkInputs = with python3.pkgs; [
+    pytest-runner
+    pytest
+  ];
+
+  meta = with lib; {
+    homepage = "https://radicale.org/v2.html";
+    description = "CalDAV CardDAV server";
+    longDescription = ''
+      The Radicale Project is a complete CalDAV (calendar) and CardDAV
+      (contact) server solution. Calendars and address books are available for
+      both local and remote access, possibly limited through authentication
+      policies. They can be viewed and edited by calendar and contact clients
+      on mobile phones or computers.
+    '';
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ edwtjo pSub aneeshusa infinisil ];
+  };
+}