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/py-multibase/default.nix

@@ -0,0 +1,46 @@
+{ buildPythonPackage
+, fetchPypi
+, isPy27
+, lib
+, morphys
+, pytest
+, pytest-runner
+, python-baseconv
+, six
+}:
+buildPythonPackage rec {
+  pname = "py-multibase";
+  version = "1.0.3";
+  disabled = isPy27;
+
+  src = fetchPypi {
+    inherit pname version ;
+    sha256 = "d28a20efcbb61eec28f55827a0bf329c7cea80fffd933aecaea6ae8431267fe4";
+  };
+
+  postPatch = ''
+    substituteInPlace setup.cfg --replace "[pytest]" ""
+    substituteInPlace setup.cfg --replace "python_classes = *TestCase" ""
+  '';
+
+  nativeBuildInputs = [
+    pytest-runner
+  ];
+
+  propagatedBuildInputs = [
+    morphys
+    six
+    python-baseconv
+  ];
+
+  checkInputs = [
+    pytest
+  ];
+
+  meta = with lib; {
+    description = "Multibase is a protocol for distinguishing base encodings and other simple string encodings";
+    homepage = "https://github.com/multiformats/py-multibase";
+    license = licenses.mit;
+    maintainers = with maintainers; [ rakesh4g ];
+  };
+}