myspell-de-ch 20161207-1 (arm64 binary) in ubuntu zesty

 This is the German (Switzerland, Liechtenstein) dictionary (de-CH-1996)
 for use with the myspell spellchecker.
 .
 Most notably this variant supports swiss spelling. This includes some
 Swiss words, as well as ss instead of German sz ligature.
 .
 This is a legacy package for use with the old myspell library.
 Usually you will use hunspell instead of myspell nowadays, which is
 backward compatible but provides better spell checking. So you may
 prefer hunspell-de-ch over this package.