{ buildApp, nextcloudVersion }:
let
  external_3_10_2 = buildApp rec {
    appName = "external";
    version = "3.10.2";
    url = "https://github.com/nextcloud-releases/${appName}/releases/download/v${version}/${appName}-v${version}.tar.gz";
    sha256 = "01r9nyjq38xidgdlgkrxgyhn7bn1w2c4m4pbm26f7gglmb4lsmml";
  };
  external_3_9_0 = buildApp rec {
    appName = "external";
    version = "3.9.0";
    url = "https://github.com/nextcloud/${appName}/releases/download/v${version}/${appName}-${version}.tar.gz";
    sha256 = "0fb9qg63p07wrfpjg36n80jcvj7wfv39vnwgc6jkxs6q647pbbp0";
  };
  versions = {
    "22" = external_3_9_0;
    "23" = external_3_10_2;
  };
in
  versions."${builtins.toString nextcloudVersion}" or (throw "Unsupported version for nextcloud app external")