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/fastecdsa/default.nix

@@ -0,0 +1,41 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, gmp
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "fastecdsa";
+  version = "2.2.3";
+  format = "setuptools";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "269bdb0f618b38f8f6aec9d23d23db518046c3cee01a954fa6aa7322a1a7db8f";
+  };
+
+  buildInputs = [ gmp ];
+
+  checkInputs = [ pytestCheckHook ];
+
+  disabledTestPaths = [
+    # skip tests which require being online to download test vectors
+    "fastecdsa/tests/test_wycheproof_vectors.py"
+    "fastecdsa/tests/test_rfc6979_ecdsa.py"
+  ];
+
+  # skip tests for now, they fail with
+  # ImportError: cannot import name '_ecdsa' from 'fastecdsa'
+  # but the installed package works just fine
+  doCheck = false;
+
+  pythonImportsCheck = [ "fastecdsa" ];
+
+  meta = with lib; {
+    description = "Fast elliptic curve digital signatures";
+    homepage = "https://github.com/AntonKueltz/fastecdsa";
+    license = licenses.unlicense;
+    maintainers = with maintainers; [ prusnak ];
+  };
+}