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/applications/misc/khard/default.nix

@@ -0,0 +1,42 @@
+{ lib, python3 }:
+
+python3.pkgs.buildPythonApplication rec {
+  version = "0.17.0";
+  pname = "khard";
+
+  src = python3.pkgs.fetchPypi {
+    inherit pname version;
+    sha256 = "062nv4xkfsjc11k9m52dh6xjn9z68a4a6x1s8z05wwv4jbp1lkhn";
+  };
+
+  SETUPTOOLS_SCM_PRETEND_VERSION = version;
+  nativeBuildInputs = [
+    python3.pkgs.setuptools-scm
+  ];
+
+  propagatedBuildInputs = with python3.pkgs; [
+    atomicwrites
+    configobj
+    ruamel-yaml
+    unidecode
+    vobject
+  ];
+
+  postInstall = ''
+    install -D misc/zsh/_khard $out/share/zsh/site-functions/_khard
+  '';
+
+  preCheck = ''
+    # see https://github.com/scheibler/khard/issues/263
+    export COLUMNS=80
+  '';
+
+  pythonImportsCheck = [ "khard" ];
+
+  meta = {
+    homepage = "https://github.com/scheibler/khard";
+    description = "Console carddav client";
+    license = lib.licenses.gpl3;
+    maintainers = with lib.maintainers; [ matthiasbeyer ];
+  };
+}