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/audio/beets/plugins/alternatives.nix

@@ -0,0 +1,32 @@
+{ lib, fetchFromGitHub, beets, python3Packages }:
+
+python3Packages.buildPythonApplication rec {
+  pname = "beets-alternatives";
+  version = "unstable-2021-02-01";
+
+  src = fetchFromGitHub {
+    repo = "beets-alternatives";
+    owner = "geigerzaehler";
+    rev = "288299e3aa9a1602717b04c28696fce5ce4259bf";
+    sha256 = "sha256-Xl7AHr33hXQqQDuFbWuj8HrIugeipJFPmvNXpCkU/mI=";
+  };
+
+  postPatch = ''
+    substituteInPlace setup.cfg \
+      --replace "addopts = --cov --cov-report=term --cov-report=html" ""
+  '';
+
+  nativeBuildInputs = [ beets ];
+
+  checkInputs = with python3Packages; [
+    pytestCheckHook
+    mock
+  ];
+
+  meta = with lib; {
+    description = "Beets plugin to manage external files";
+    homepage = "https://github.com/geigerzaehler/beets-alternatives";
+    maintainers = with maintainers; [ aszlig lovesegfault ];
+    license = licenses.mit;
+  };
+}