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/django-prometheus/default.nix

@@ -0,0 +1,51 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchFromGitHub
+, prometheus-client
+, pytest-django
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "django-prometheus";
+  version = "2.2.0";
+  format = "setuptools";
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "korfuri";
+    repo = pname;
+    rev = version;
+    sha256 = "1y1cmycc545xrys41jk8kia36hwnkwhkw26mlpfdjgb63vq30x1d";
+  };
+
+  patches = [
+    ./drop-untestable-database-backends.patch
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace '"pytest-runner"' ""
+  '';
+
+  propagatedBuildInputs = [
+    prometheus-client
+  ];
+
+  pythonImportsCheck = [
+    "django_prometheus"
+  ];
+
+  checkInputs = [
+    pytest-django
+    pytestCheckHook
+  ];
+
+  meta = with lib; {
+    description = "Django middlewares to monitor your application with Prometheus.io";
+    homepage = "https://github.com/korfuri/django-prometheus";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ hexa ];
+  };
+}

pkgs/development/python-modules/django-prometheus/drop-untestable-database-backends.patch

@@ -0,0 +1,38 @@
+diff --git a/django_prometheus/tests/end2end/testapp/settings.py b/django_prometheus/tests/end2end/testapp/settings.py
+index 0630721..bd2190a 100644
+--- a/django_prometheus/tests/end2end/testapp/settings.py
++++ b/django_prometheus/tests/end2end/testapp/settings.py
+@@ -53,33 +53,6 @@ DATABASES = {
+         "ENGINE": "django_prometheus.db.backends.sqlite3",
+         "NAME": "db.sqlite3",
+     },
+-    # Comment this to not test django_prometheus.db.backends.postgres.
+-    "postgresql": {
+-        "ENGINE": "django_prometheus.db.backends.postgresql",
+-        "NAME": "postgres",
+-        "USER": "postgres",
+-        "PASSWORD": "",
+-        "HOST": "localhost",
+-        "PORT": "5432",
+-    },
+-    # Comment this to not test django_prometheus.db.backends.postgis.
+-    "postgis": {
+-        "ENGINE": "django_prometheus.db.backends.postgis",
+-        "NAME": "postgis",
+-        "USER": "postgres",
+-        "PASSWORD": "",
+-        "HOST": "localhost",
+-        "PORT": "5432",
+-    },
+-    # Comment this to not test django_prometheus.db.backends.mysql.
+-    "mysql": {
+-        "ENGINE": "django_prometheus.db.backends.mysql",
+-        "NAME": "django_prometheus_1",
+-        "USER": "travis",
+-        "PASSWORD": "",
+-        "HOST": "localhost",
+-        "PORT": "3306",
+-    },
+     # The following databases are used by test_db.py only
+     "test_db_1": {
+         "ENGINE": "django_prometheus.db.backends.sqlite3",