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/pathvalidate/default.nix

@@ -0,0 +1,24 @@
+{ lib, buildPythonPackage, fetchPypi, pythonOlder }:
+
+buildPythonPackage rec {
+  pname = "pathvalidate";
+  version = "2.5.0";
+  disabled = pythonOlder "3.5";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "119ba36be7e9a405d704c7b7aea4b871c757c53c9adc0ed64f40be1ed8da2781";
+  };
+
+  # Requires `pytest-md-report`, causing infinite recursion.
+  doCheck = false;
+
+  pythonImportsCheck = [ "pathvalidate" ];
+
+  meta = with lib; {
+    description = "A Python library to sanitize/validate a string such as filenames/file-paths/etc";
+    homepage = "https://github.com/thombashi/pathvalidate";
+    license = licenses.mit;
+    maintainers = with maintainers; [ oxalica ];
+  };
+}