@ilja if you configure less stuff to be built, either into the kernel or as modules it's goes faster

make localmodconfig writes a configuration for your running system (you might miss some modules for peripherals not currently plugged in)

see also https://wiki.gentoo.org/wiki/Kernel/Configuration#Tools

@eal it's really the first time im doing this, so for now i wanna see it working in "default mode" before diving deeper and wondering why certain things go wrong. but yeah, that's probably a kind of thing ill need to look into later (and getting a better idea of how these things work is indeed part of why i want to do this)