ghcup does not install on FreeBSD13.1

ghcup aborts during install with the following error:

13.1-RELEASE-p2
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 67.3M  100 67.3M    0     0  4401k      0  0:00:15  0:00:15 --:--:-- 4608k
ld-elf.so.1: Shared object "libncursesw.so.8" not found, required by "ghcup"
"_eghcup config set downloader Curl" failed!

The package ncurses is installed. I can see that it installs /usr/local/lib/libncursesw.so but not with the suffix .8.

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