Not only myspell-hu errors out here:
Building PostgreSQL dictionaries from installed myspell/hunspell packages...
ERROR: no ecoding defined in /usr/share/hunspell/ar.aff, ignoring bg_bg ... hu_hu iconv: ungültige Eingabe-Sequenz an der Stelle 131 ERROR: Conversion of /usr/share/hunspell/hu_HU.aff failed id_id is_is it_it ERROR: no ecoding defined in /usr/share/hunspell/kk_KZ.aff, ignoring kmr_latn