Comment # 2 on bug 1043465 from Mindaugas Baranauskas

How then opensuse plans to prevent errors in situations, were used do task in
yast2-storage with partitions/features, without having appropriate tools/utils
as dependencies?

Lets say, user installed system with Ext4 partitions (thus it not required any
Btrfs package at installation) and now wants to create Btrfs partition...

Do openSUSE plan 
a) check available tools/utils at initialization of yast2-storage and then
enable only features with existing corresponding tools/utils (and disabling if
utils not found)
b) ask to install right package right before executing related task (at
runtime, as needed), similar to some other yast modules
c) other method ?