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/trio/default.nix

@@ -0,0 +1,76 @@
+{ lib, buildPythonPackage, fetchPypi, pythonOlder
+, attrs
+, sortedcontainers
+, async_generator
+, idna
+, outcome
+, contextvars
+, pytestCheckHook
+, pyopenssl
+, trustme
+, sniffio
+, stdenv
+, jedi
+, astor
+, yapf
+, coreutils
+}:
+
+buildPythonPackage rec {
+  pname = "trio";
+  version = "0.20.0";
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-ZwpS0xFdDoeeGsg4pOuZmvMvhYFj46cE/kg53ipnYHA=";
+  };
+
+  propagatedBuildInputs = [
+    attrs
+    sortedcontainers
+    async_generator
+    idna
+    outcome
+    sniffio
+  ] ++ lib.optionals (pythonOlder "3.7") [ contextvars ];
+
+  # tests are failing on Darwin
+  doCheck = !stdenv.isDarwin;
+
+  checkInputs = [
+    astor
+    jedi
+    pyopenssl
+    pytestCheckHook
+    trustme
+    yapf
+  ];
+
+  preCheck = ''
+    substituteInPlace trio/tests/test_subprocess.py \
+      --replace "/bin/sleep" "${coreutils}/bin/sleep"
+  '';
+
+  # It appears that the build sandbox doesn't include /etc/services, and these tests try to use it.
+  disabledTests = [
+    "getnameinfo"
+    "SocketType_resolve"
+    "getprotobyname"
+    "waitpid"
+    "static_tool_sees_all_symbols"
+    # tests pytest more than python
+    "fallback_when_no_hook_claims_it"
+  ];
+
+  pytestFlagsArray = [
+    "-W" "ignore::DeprecationWarning"
+  ];
+
+  meta = {
+    description = "An async/await-native I/O library for humans and snake people";
+    homepage = "https://github.com/python-trio/trio";
+    license = with lib.licenses; [ mit asl20 ];
+    maintainers = with lib.maintainers; [ catern ];
+  };
+}