Here i want to write down a draft or some notes, on how two configure an use my raspberry-pi3 as a smart-tv, with postmarket-os and plasma-bigscreen.
First pmbootstrap init and choose the right device (in my case) a raspberry-pi3. Then install it to an sdcard:
pmbootstrap install --sdcard /dev/sdb --no-recommends --add discover
I chose to not install Mycroft for now, due to better performance. When all software components get more optmized, it may work in the future.