I just followed the instructions given on the wiki-page. I ran into some small issues for which i made some improvements on the page. I used the master-branch which is now using apk and not opkg any more. But i was able to install the required packages.
Would this setup allow for "online" development on OpenWRT? Thus overwriting files on the rootfs partition with just compiled ones?
Currently i run into an issue: https://github.com/openwrt/openwrt/issues/17562