The module _curses fails to build because curses cannot be found on HP-UX. In this case, it has an unorthodox location: > $ ll /usr/lib/hpux32/libcurses.so lr-xr-xr-x 1 bin bin 17 2018-09-07 15:29 /usr/lib/hpux32/libcurses.so -> ./libxcurses.so.1* A PR is in preparation