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/redis/default.nix

@@ -0,0 +1,72 @@
+{ lib
+, fetchPypi
+, buildPythonPackage
+, pythonOlder
+
+# propagates
+, async-timeout
+, deprecated
+, importlib-metadata
+, packaging
+, typing-extensions
+
+# extras: hiredis
+, hiredis
+
+# extras: ocsp
+, cryptography
+, pyopenssl
+, requests
+}:
+
+buildPythonPackage rec {
+  pname = "redis";
+  version = "4.2.1";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-/kVROIEinb7mEGILnggXsfSMR7pjWHAyD9RKcSIEu90=";
+  };
+
+  propagatedBuildInputs = [
+    async-timeout
+    deprecated
+    packaging
+    typing-extensions
+  ] ++ lib.optionals (pythonOlder "3.8") [
+    importlib-metadata
+  ];
+
+  passthru.optional-dependencies = {
+    hidredis = [
+      hiredis
+    ];
+    ocsp = [
+      cryptography
+      pyopenssl
+      requests
+    ];
+  };
+
+  pythonImportsCheck = [
+    "redis"
+    "redis.client"
+    "redis.cluster"
+    "redis.connection"
+    "redis.exceptions"
+    "redis.sentinel"
+    "redis.utils"
+  ];
+
+  # tests require a running redis
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Python client for Redis key-value store";
+    homepage = "https://pypi.python.org/pypi/redis/";
+    license = with licenses; [ mit ];
+  };
+}