Had to manually install the ncurses package when install vim. See below.

root@b1:~/aports/main# apk add vim
Installing ncurses-terminfo (5.7-r0)
Installing vim (7.2.234-r0)
OK: 29 packages, 191 dirs, 5767 files
root@b1:~/aports/main# vim
vim: can’t load library ‘libncurses.so.5’
root@b1:~/aports/main# apk add ncurses
Installing ncurses (5.7-r0)
OK: 30 packages, 192 dirs, 5794 files
root@b1:~/aports/main# vim
root@b1:~/aports/main#

Should be latest builds of the packages
/etc/apk/repositories:
http://dl-4.alpinelinux.org/alpine/v1.9/packages/main
http://dl-4.alpinelinux.org/alpine/v1.9/packages/testing

It might be as simple as adding ncurses to vim APKBUILD. I could do it, but wanted to infom the maintainer :)

(from redmine: issue id 100, created on 2009-07-29, closed on 2009-07-30)

• Relations:
  • relates #104 (closed)
• Changesets:
  • Revision f841ddd0 on 2009-07-29T20:18:20Z:

main/abuild: fix for dynamic deps

fixes #100