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/pycairo/default.nix

@@ -0,0 +1,55 @@
+{ lib
+, pythonOlder
+, fetchFromGitHub
+, meson
+, ninja
+, buildPythonPackage
+, pytestCheckHook
+, pkg-config
+, cairo
+, python
+}:
+
+buildPythonPackage rec {
+  pname = "pycairo";
+  version = "1.20.1";
+
+  disabled = pythonOlder "3.6";
+
+  format = "other";
+
+  src = fetchFromGitHub {
+    owner = "pygobject";
+    repo = "pycairo";
+    rev = "v${version}";
+    sha256 = "09aisph7ycgb4xi2xglvrn59i3cyqms8jbb876cl9763g7yqbcr6";
+  };
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+  ];
+
+  buildInputs = [
+    cairo
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  mesonFlags = [
+    # This is only used for figuring out what version of Python is in
+    # use, and related stuff like figuring out what the install prefix
+    # should be, but it does need to be able to execute Python code.
+    "-Dpython=${python.pythonForBuild.interpreter}"
+  ];
+
+  meta = with lib; {
+    description = "Python 3 bindings for cairo";
+    homepage = "https://pycairo.readthedocs.io/";
+    license = with licenses; [ lgpl21Only mpl11 ];
+    platforms = lib.platforms.linux ++ lib.platforms.darwin;
+  };
+}