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/networking/cantoolz/default.nix

@@ -0,0 +1,64 @@
+{ lib
+, fetchFromGitHub
+, fetchpatch
+, python3
+}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "cantoolz";
+  version = "3.7.0";
+
+  src = fetchFromGitHub {
+    owner = "CANToolz";
+    repo = "CANToolz";
+    rev = "v${version}";
+    sha256 = "sha256-0ROWx1CsKtjxmbCgPYZpvr37VKsEsWCwMehf0/0/cnY=";
+  };
+
+  patches = [
+    (fetchpatch {
+      # Replace time.clock() which was removed, https://github.com/CANToolz/CANToolz/pull/30
+      url = "https://github.com/CANToolz/CANToolz/pull/30/commits/d75574523d3b273c40fb714532c4de27f9e6dd3e.patch";
+      sha256 = "0g91hywg5q6f2qk1awgklywigclrbhh6a6mwd0kpbkk1wawiiwbc";
+    })
+  ];
+
+  propagatedBuildInputs = with python3.pkgs; [
+    flask
+    pyserial
+    mido
+    numpy
+    bitstring
+  ];
+
+  checkInputs = with python3.pkgs; [
+    pytestCheckHook
+  ];
+
+  disabledTests = [
+    "test_process"
+    # Sandbox issue
+    "test_server"
+  ];
+
+  pythonImportsCheck = [
+    "cantoolz"
+  ];
+
+  meta = with lib; {
+    description = "Black-box CAN network analysis framework";
+    longDescription = ''
+      CANToolz is a framework for analysing CAN networks and devices. It
+      provides multiple modules that can be chained using CANToolz's pipe
+      system and used by security researchers, automotive/OEM security
+      testers in black-box analysis.
+
+      CANToolz can be used for ECU discovery, MitM testing, fuzzing, brute
+      forcing, scanning or R&D, testing and validation. More can easily be
+      implemented with a new module.
+    '';
+    homepage = "https://github.com/CANToolz/CANToolz";
+    license = with licenses; [ asl20 ];
+    maintainers = with maintainers; [ fab ];
+  };
+}