{ buildApp, nextcloudVersion }:
assert nextcloudVersion >= 14 && nextcloudVersion <= 21;
buildApp rec {
  appName = "files_mindmap";
  version = "0.0.24";
  url = "https://github.com/ACTom/${appName}/releases/download/v${version}/${appName}-${version}.tar.gz";
  sha256 = "1cd6lq8z7k2h5dnj58qrxfs7l5pw3qw2w8r5r90r7an8v215gv2p";
  installHook = self: ''
    # https://github.com/ACTom/files_mindmap/issues/122
    ln -s ${self}/img/mindmap.svg $out/core/img/filetypes/
  '';
}