Alpine Linux

Install the repo the same as any other on alpine; edit your repository list at:

/etc/apk/repositories

Then write this line in it:

https://pkg.nilsu.org/alpine/testing

You can list all packages in the repo with apk list:

apk list --from none --repository "https://pkg.nilsu.org/alpine/testing" -a

Void Linux

Install the repo the same as any other on void; create a file for the repository at:

/etc/xbps.d/20-nilsu.conf

Then write this line in it:

repository=https://pkg.nilsu.org/void

You can list all packages in the repo with xpkg from xtools:

xpkg -R https://pkg.nilsu.org/void -a

The sources for this repo can be found here:
https://git.sr.ht/~kota/nilsu-pkg-void