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/aiopg/default.nix

@@ -0,0 +1,42 @@
+{ lib
+, async-timeout
+, buildPythonPackage
+, fetchFromGitHub
+, psycopg2
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "aiopg";
+  version = "1.3.3";
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "aio-libs";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-GHKsI6JATiwUg+YlGhWPBqtYl+GyXWNiDi/hzPDl2hE=";
+  };
+
+  propagatedBuildInputs = [
+    async-timeout
+    psycopg2
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "psycopg2-binary" "psycopg2"
+  '';
+
+  # Tests requires a PostgreSQL Docker instance
+  doCheck = false;
+
+  pythonImportsCheck = [ "aiopg" ];
+
+  meta = with lib; {
+    description = "Python library for accessing a PostgreSQL database";
+    homepage = "https://aiopg.readthedocs.io/";
+    license = with licenses; [ bsd2 ];
+    maintainers = with maintainers; [ fab ];
+  };
+}