blivet-gui works on Wayland and baring any bugs it should be a
suitable replacement for gparted; and actually contains quite a bit
more functionality than gparted. It also asks for authentication but
based on what I'm seeing with ps, I'm gonna guess it's the GUI part
owned by the non-privileged user where the daemon doing the storage
modifications is owned by root.
[chris@f25h ~]$ ps aux | grep blivet
chris 6907 1.0 0.7 813432 64580 tty2 Sl+ 22:29 0:01
/usr/bin/python3 /usr/bin/blivet-gui
root 6924 1.1 0.6 529380 51436 tty2 Sl+ 22:29 0:01
/usr/bin/python3 /usr/bin/blivet-gui-daemon 1000
Chris Murphy