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/tools/security/pynitrokey/default.nix

@@ -0,0 +1,44 @@
+{ python3Packages, lib }:
+
+with python3Packages;
+
+buildPythonApplication rec {
+  pname = "pynitrokey";
+  version = "0.4.9";
+  format = "flit";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-mhH6mVgLRX87PSGTFkj1TE75jU1lwcaRZWbC67T+vWo=";
+  };
+
+  propagatedBuildInputs = [
+    click
+    cryptography
+    ecdsa
+    fido2
+    intelhex
+    pyserial
+    pyusb
+    requests
+    pygments
+    python-dateutil
+    urllib3
+    cffi
+    cbor
+    nkdfu
+  ];
+
+  # no tests
+  doCheck = false;
+
+  pythonImportsCheck = [ "pynitrokey" ];
+
+  meta = with lib; {
+    description = "Python client for Nitrokey devices";
+    homepage = "https://github.com/Nitrokey/pynitrokey";
+    license = with licenses; [ asl20 mit ];
+    maintainers = with maintainers; [ frogamic ];
+    mainProgram = "nitropy";
+  };
+}