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/pyzbar/default.nix

@@ -0,0 +1,50 @@
+{ lib
+, stdenv
+, buildPythonPackage
+, fetchFromGitHub
+, numpy
+, pillow
+, zbar
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "pyzbar";
+  version = "0.1.9";
+
+  src = fetchFromGitHub {
+    owner = "NaturalHistoryMuseum";
+    repo = "pyzbar";
+    rev = "v${version}";
+    sha256 = "8IZQY6qB4r1SUPItDlTDnVQuPs0I38K3yJ6LiPJuwbU=";
+  };
+
+  propagatedBuildInputs = [ zbar pillow numpy ];
+
+  checkInputs = [ pytestCheckHook ];
+
+  # find_library doesn't return an absolute path
+  # https://github.com/NixOS/nixpkgs/issues/7307
+  postPatch = ''
+    substituteInPlace pyzbar/zbar_library.py \
+      --replace \
+        "find_library('zbar')" \
+        '"${lib.getLib zbar}/lib/libzbar${stdenv.hostPlatform.extensions.sharedLibrary}"'
+  '';
+
+  disabledTests = [
+    # find_library has been replaced by a hardcoded path
+    # the test fails due to find_library not called
+    "test_found_non_windows"
+    "test_not_found_non_windows"
+  ];
+
+  pythonImportsCheck = [ "pyzbar" ];
+
+  meta = with lib; {
+    description = "Read one-dimensional barcodes and QR codes from Python using the zbar library.";
+    homepage = "https://github.com/NaturalHistoryMuseum/pyzbar";
+    license = licenses.mit;
+    maintainers = with maintainers; [ gador ];
+  };
+}