$ pamac build ncurses5-compat-libs
Cloning ncurses5-compat-libs build files...
Checking ncurses5-compat-libs dependencies...
The PGP key C52048C0C0748FEE227D47A2702353E0F7E48EDB is needed to verify ncurses5-compat-libs source files.
Trust Thomas Dickey <dickey@invisible-island.net> and import the PGP key ? [y/N]
And why there is no option "I don't know" [y/N/D] ?