On second thought, libpcre depends on readline, which should have ncurses as a dependency, but does not. I checked my email when submitting the readline extension in May 2010, and I did not include the .dep file.
Jason, please put the ncurses dependency in readline.tcz.dep instead. Readline was apparently updated to 6.2 in February, and I did not notice. I will rebuild and issue a proper update soon.