{ buildApp, nextcloudVersion }:
let
  polls_2_0_6 = buildApp rec {
    appName = "polls";
    version = "2.0.6";
    url = "https://github.com/nextcloud/polls/releases/download/v${version}/${appName}.tar.gz";
    sha256 = "0pfsfwipwpnaldp5436jbfwhw3ign5h612njzx53j75v8ykq06zi";
  };
  polls_3_4_0 = buildApp rec {
    appName = "polls";
    version = "3.4.0";
    url = "https://github.com/nextcloud/polls/releases/download/v${version}/${appName}.tar.gz";
    sha256 = "1ddcf4ckbazyf2rwhxgpfpwvy217zd8a8akq5zhify4kjkbpgb9y";
  };
  versions = {
    "20" = polls_2_0_6;
    "21" = polls_3_4_0;
    "22" = polls_3_4_0;
    "23" = polls_3_4_0;
  };
in
  versions."${builtins.toString nextcloudVersion}" or (throw "Unsupported version for nextcloud app polls")