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/oscrypto/default.nix

@@ -0,0 +1,52 @@
+{ lib
+, stdenv
+, asn1crypto
+, buildPythonPackage
+, fetchFromGitHub
+, openssl
+, pytestCheckHook
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "oscrypto";
+  version = "1.3.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchFromGitHub {
+    owner = "wbond";
+    repo = pname;
+    rev = version;
+    hash = "sha256-CmDypmlc/kb6ONCUggjT1Iqd29xNSLRaGh5Hz36dvOw=";
+  };
+
+  propagatedBuildInputs = [
+    asn1crypto
+    openssl
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "oscrypto"
+  ];
+
+  doCheck = !stdenv.isDarwin;
+
+  disabledTests = [
+    # Tests require network access
+    "TLSTests"
+    "TrustListTests"
+  ];
+
+  meta = with lib; {
+    description = "Encryption library for Python";
+    homepage = "https://github.com/wbond/oscrypto";
+    license = licenses.mit;
+    maintainers = with maintainers; [ ];
+  };
+}