brew/package/scripts/preinstall

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#!/bin/bash
set -euo pipefail
homebrew_pkg_user_plist="/var/tmp/.homebrew_pkg_user.plist"
if [[ -f "${homebrew_pkg_user_plist}" ]] && [[ -n $(defaults read "${homebrew_pkg_user_plist}" HOMEBREW_PKG_USER) ]]
then
exit 0
fi
homebrew_pkg_user=$(echo "show State:/Users/ConsoleUser" | scutil | awk '/Name :/ { print $3 }')
if [[ "${homebrew_pkg_user}" =~ _mbsetupuser|loginwindow|root ]] || [[ -z "${homebrew_pkg_user}" ]]
then
echo "No valid user for Homebrew installation. Log in before install or specify an install user."
exit 1
else
exit 0
fi