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/aiohttp-swagger/default.nix

@@ -0,0 +1,60 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, aiohttp
+, jinja2
+, markupsafe
+, pytest-aiohttp
+, pytestCheckHook
+, pythonOlder
+, pyyaml
+}:
+
+buildPythonPackage rec {
+  pname = "aiohttp-swagger";
+  version = "1.0.15";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "cr0hn";
+    repo = pname;
+    rev = version;
+    hash = "sha256-M43sNpbXWXFRTd549cZhvhO35nBB6OH+ki36BzSk87Q=";
+  };
+
+  propagatedBuildInputs = [
+    aiohttp
+    jinja2
+    markupsafe
+    pyyaml
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+    pytest-aiohttp
+  ];
+
+  postPatch = ''
+    substituteInPlace requirements.txt \
+      --replace "markupsafe~=1.1.1" "markupsafe>=1.1.1" \
+      --replace "jinja2~=2.11.2" "jinja2>=2.11.2"
+  '';
+
+  preCheck = ''
+    # The custom client is obsolete
+    rm tests/conftest.py
+  '';
+
+  pythonImportsCheck = [
+    "aiohttp_swagger"
+  ];
+
+  meta = with lib; {
+    description = "Swagger API Documentation builder for aiohttp";
+    homepage = "https://github.com/cr0hn/aiohttp-swagger";
+    license = licenses.mit;
+    maintainers = with maintainers; [ elohmeier ];
+  };
+}