There is an updated pull request by SirPscl against master on the void-packages repository

https://github.com/SirPscl/void-packages hunspell-de_CH
https://github.com/void-linux/void-packages/pull/17871

New package: hunspell-de_CH


A patch file from https://github.com/void-linux/void-packages/pull/17871.patch is attached