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/flask-session/default.nix

@@ -0,0 +1,27 @@
+{ lib, fetchPypi, buildPythonPackage, pytestCheckHook, flask, cachelib }:
+
+buildPythonPackage rec {
+  pname = "Flask-Session";
+  version = "0.4.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-ye1UMh+oxMoBMv/TNpWCdZ7aclL7SzvuSA5pDRukH0Y=";
+  };
+
+  propagatedBuildInputs = [ flask cachelib ];
+
+  checkInputs = [ pytestCheckHook ];
+
+  # The rest of the tests require database servers and optional db connector dependencies
+  pytestFlagsArray = [ "-k" "'null_session or filesystem_session'" ];
+
+  pythonImportsCheck = [ "flask_session" ];
+
+  meta = with lib; {
+    description = "A Flask extension that adds support for server-side sessions";
+    homepage = "https://github.com/fengsp/flask-session";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ zhaofengli ];
+  };
+}