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/deltachat/default.nix

@@ -0,0 +1,62 @@
+{ lib
+, buildPythonPackage
+, isPy27
+, pkg-config
+, pkgconfig
+, setuptools-scm
+, libdeltachat
+, cffi
+, imap-tools
+, requests
+, pluggy
+, setuptools
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "deltachat";
+  inherit (libdeltachat) version src;
+  sourceRoot = "${src.name}/python";
+
+  disabled = isPy27;
+
+  nativeBuildInputs = [
+    pkg-config
+    pkgconfig
+    setuptools-scm
+  ];
+
+  SETUPTOOLS_SCM_PRETEND_VERSION = version;
+
+  buildInputs = [
+    libdeltachat
+  ];
+
+  propagatedBuildInputs = [
+    cffi
+    imap-tools
+    pluggy
+    requests
+    setuptools
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "deltachat"
+    "deltachat.account"
+    "deltachat.contact"
+    "deltachat.chat"
+    "deltachat.message"
+  ];
+
+  meta = with lib; {
+    description = "Python bindings for the Delta Chat Core library";
+    homepage = "https://github.com/deltachat/deltachat-core-rust/tree/master/python";
+    changelog = "https://github.com/deltachat/deltachat-core-rust/blob/${version}/python/CHANGELOG";
+    license = licenses.mpl20;
+    maintainers = with maintainers; [ dotlambda ];
+  };
+}