sudo emerge -u dvtm

These are the packages that would be merged, in reverse order:

Calculating dependencies... done!

Total: 0 packages, Size of downloads: 0 KiB

!!! The following update has been skipped due to unsatisfied dependencies:

app-misc/dvtm:0

selected: app-misc/dvtm-0.15-r2:0/0::nokit, installed
skipped: app-misc/dvtm-0.15-r3:0/0::nokit, ebuild scheduled for merge (see unsatisfied dependency below)

emerge: there are no ebuilds to satisfy ">=sys-libs/ncurses-6.1:0=[unicode]".
(dependency required by "app-misc/dvtm-0.15-r3::nokit" [ebuild])