Hi,
Is there a way to reinstall yast?
It was uninstalled during an update, not sure how, but it’s gone.
I’ve tried booting from a previous snapshot, and to reverse the changes from snapper (which I reinstalled with zypper), but none of these solutions worked.
Thanks!
You can see what is available vs installed using
zypper se -s yast
Check if the yast patterns are installed
zypper se -s patterns-yast
Perhaps the following will help with reinstalling a working yast environment
zypper in --force patterns-yast-yast2_basis patterns-yast-x11_yast
BTW, how are you updating here? As my forum colleague Knurpht is often reminding TW users, the correct way is to only use
zypper dup
According to the thread title, OP is using 15.0 
IMO you should describe what makes you think YaST was uninstalled.
Perhaps it’s still in your system, but you’re not able to invoke it?
Try… From a command line…
sudo yast2
Also,
Some Desktops don’t list YaST as a menu entry any more (Why, I wouldn’t know and I lament its disappearance),
But instead list all the YaST Modules by their functional names.
So,
What Desktop are you using?
TSU
Very true. Ignore that post. :X
AFAIK in LEAP 15 zypper dup does not do vendor changes so running it would make sure all installed packages are the same as the ones from the online repo’s
the OP should post his repo list
zypper lr -d
the only reason for yast to be broken is if he installed a package for a different distribution ie TW
if all of the OP’s repos are for LEAP 15 running
zypper ve
should fix things vorst case scenario running
zypper dup --from <OSS update repo alias>
should fix things