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/emv/default.nix

@@ -0,0 +1,57 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, click
+, pyscard
+, pycountry
+, terminaltables
+, pytestCheckHook
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "emv";
+  version = "1.0.14";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.4";
+
+  src = fetchFromGitHub {
+    owner = "russss";
+    repo = "python-emv";
+    rev = "v${version}";
+    hash = "sha256-MnaeQZ0rA3i0CoUA6HgJQpwk5yo4rm9e+pc5XzRd1eg=";
+  };
+
+  propagatedBuildInputs = [
+    click
+    pyscard
+    pycountry
+    terminaltables
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace '"enum-compat==0.0.3",' "" \
+      --replace '"argparse==1.4.0",' "" \
+      --replace "click==7.1.2" "click" \
+      --replace "pyscard==2.0.0" "pyscard" \
+      --replace "pycountry==20.7.3" "pycountry" \
+      --replace "terminaltables==3.1.0" "terminaltables"
+  '';
+
+  pythonImportsCheck = [
+    "emv"
+  ];
+
+  meta = with lib; {
+    description = "Implementation of the EMV chip-and-pin smartcard protocol";
+    homepage = "https://github.com/russss/python-emv";
+    license = licenses.mit;
+    maintainers = with maintainers; [ lukegb ];
+  };
+}