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/service-identity/default.nix

@@ -0,0 +1,45 @@
+{ lib
+, attrs
+, buildPythonPackage
+, cryptography
+, fetchFromGitHub
+, idna
+, pyasn1
+, pyasn1-modules
+, six
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "service-identity";
+  version = "21.1.0";
+
+  src = fetchFromGitHub {
+    owner = "pyca";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-pWc2rU3ULqEukMhd1ySY58lTm3s8f/ayQ7CY4nG24AQ=";
+  };
+
+  propagatedBuildInputs = [
+    attrs
+    cryptography
+    idna
+    pyasn1
+    pyasn1-modules
+    six
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "service_identity" ];
+
+  meta = with lib; {
+    description = "Service identity verification for pyOpenSSL";
+    homepage = "https://service-identity.readthedocs.io";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fab ];
+  };
+}