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/dbf/default.nix

@@ -0,0 +1,39 @@
+{ lib
+, fetchPypi
+, buildPythonPackage
+, aenum
+, pythonOlder
+, python
+}:
+
+buildPythonPackage rec {
+  pname = "dbf";
+  version = "0.99.2";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-aeutAP2y+bUmUOZ39TpXULP+egeBcjyDmtoCheGzw+0=";
+  };
+
+  propagatedBuildInputs = [
+    aenum
+  ];
+
+  checkPhase = ''
+    ${python.interpreter} dbf/test.py
+  '';
+
+  pythonImportsCheck = [
+    "dbf"
+  ];
+
+  meta = with lib; {
+    description = "Module for reading/writing dBase, FoxPro, and Visual FoxPro .dbf files";
+    homepage = "https://github.com/ethanfurman/dbf";
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ vrthra ];
+  };
+}