nixpkgs/pkgs/development/libraries/mdds/default.upstream

url https://gitlab.com/mdds/mdds
version_link 'mdds-.*[.]tar[.][a-z0-9]+$'
version '.*-([0-9.]+)[.]tar[.].*' '\1'

do_overwrite(){
  ensure_hash
  ensure_version
  set_var_value version $CURRENT_VERSION
  set_var_value sha256 $CURRENT_HASH
}