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/asyncpg/default.nix

@@ -0,0 +1,42 @@
+{ lib
+, fetchPypi
+, buildPythonPackage
+, uvloop
+, postgresql
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "asyncpg";
+  version = "0.25.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-Y/jmppczsoVJfChVRko03mV/LMzSWurutQcYcuk4JUA=";
+  };
+
+  checkInputs = [
+    uvloop
+    postgresql
+  ];
+
+  pythonImportsCheck = [
+    "asyncpg"
+  ];
+
+  meta = with lib; {
+    description = "Asyncio PosgtreSQL driver";
+    homepage = "https://github.com/MagicStack/asyncpg";
+    longDescription = ''
+      Asyncpg is a database interface library designed specifically for
+      PostgreSQL and Python/asyncio. asyncpg is an efficient, clean
+      implementation of PostgreSQL server binary protocol for use with Python's
+      asyncio framework.
+    '';
+    license = licenses.asl20;
+    maintainers = with maintainers; [ eadwu ];
+  };
+}