There's a merged pull request on the void-packages repository

New package: nextcloud-client 2.6.0
https://github.com/void-linux/void-packages/pull/14069

Description:
* reuse various efforts on packaging it
* does NOT support Client Encryption (LibreSSL 2.9.2 limitation)
* [x] runtime usage ("it's working for me" (tm) )
* [x]  split with subpkg -devel, ...
* [x] crossbuild
* [x] KDE dolphin specific support