Created attachment 705249 [details]
y2logs saved before proceeding past installation settings screen

To reproduce:
1-start HTTP installation using Grub and 20161105 linux and initrd
2-select do not install any bootloader (no bootloader management)
3-set taboo on grub2, shim and os-prober packages
4-click install button on installation settings screen

Actual behavior:
1-Error window reports error that must be resolved before continuing
2-installation settings screen reports grub2 needs to be selected

Expected behavior:
1-installation proceeds without insisting on installing an unneeded and unwanted bootloader package

Notes:
1-42.2 worked as expected done the same way on 30 November, as did all similar previous installations of both Distribution and Tumbleweed since Grub ceased to be a bootloader option during installation.
2-I proceeded with the installation by leaving locks set on all grub2* packages other than grub2 and specifying /dev/null as the bootloader installation target
3-whether related or not I have no idea, but login was not allowed on first boot. I booted 42.2, chrooted into TW, executed passwd, and was able to boot into TW and login successfully.
4-rpm -e grub2 on first successful boot succeeded.