Description:

I performed a fresh arch installation last night, and opted to select a few additional packages to a mostly core install. Among them was zsh; when pacman resolved deps, downloaded from a mirror, and plopped them onto my hard-drive, it installed zsh before grep was added.

The result was that the post-install script for zsh, which does a grep on /etc/shells, failed to run. So, a nice error message spit back to the installer, and the action wasn't performed.

(also, is this even needed any more?)

Steps to reproduce:

Install zsh during a netinstall.