macOS LSIsAppleDefaultNoOverrideForType to automatically open pkg or mpkg installer files in Suspicious Package or Pacifist in addition to macOS Installer app / prerequisites: EventScripts app or NSWorkspaceNotifications observer for NSWorkspaceDidLaunchApplicationNotification

applaunched.sh

#!/bin/zsh
# shellcheck shell=bash

# applaunched v0.2

export LANG=en_US.UTF-8
export PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/sbin:/opt/homebrew/bin:/opt/homebrew/sbin:/opt/local/bin:/opt/local/sbin:"$HOME"/.local/bin:"$HOME"/.local/sbin

logloc="/tmp/local.$(id -un).applaunched.log"
exec > >(tee -a "$logloc") 2>&1

currentdate=$(date)

if ! [[ $* ]] ; then
	echo -e "*** APP LAUNCHED [$currentdate] ***\nERROR: no input!\n"
	exit
fi

bid=$(echo "$*" | awk -F" /" '{print $1}' | awk '{print $NF}')
if ! [[ $bid ]] ; then
	echo -e "*** APP LAUNCHED [$currentdate] ***\nERROR: bundle ID missing!\n"
	exit
fi

# function: _installer
# LSIsAppleDefaultNoOverrideForType workaround for pkg & mpkg installer files (macOS, Always Open With)
# will automatically open pkg/mpkg files in the app Suspicious Package or Pacifist in addition to macOS default Installer.app
# Suspicious Package: https://www.mothersruin.com/software/SuspiciousPackage/
# if Suspicious Package is not installed, it will look for Pacifist instead
# Pacifist: https://www.charlessoft.com/
# trigger with "Application Has Launched" using the app EventScripts
# EventScripts: https://apps.apple.com/de/app/eventscripts/id525319418?l=en&mt=12
# alternative: trigger with a process listening for NSWorkspaceDidLaunchApplicationNotification in macOS NSWorkspaceNotifications
# note: alternative method was not tested with this script
_installer () {
	# determine pkg/mpkg path
	fullpkgpathall=$(lsof -c Installer | grep "/.*pkg$" | awk '{print substr($0, index($0,$9))}' | sort | awk '!a[$0]++')
	if ! [[ $fullpkgpathall ]] ; then
		echo -e "macOS Installer: no package detected! Exiting...\n"
	else
		# look for Suspicious Package or Pacifist first
		suspack=false
		pacifist=false
		if [[ $(mdfind -onlyin /Applications/ -onlyin "$HOME"/Applications/ "kMDItemDisplayName == \"Suspicious Package.app\"" 2>/dev/null) ]] ; then
			suspack=true
		else
			if [[ $(mdfind -onlyin /Applications/ -onlyin "$HOME"/Applications/ "kMDItemDisplayName == \"Pacifist.app\"" 2>/dev/null) ]] ; then
				pacifist=true
			fi
		fi
		if ! $suspack && ! $pacifist ; then
			echo -e "GENERAL ERROR [$currentdate]: neither Suspicious Package nor Pacifist detected: exiting!"
		else # open pkg/mpkg 
			while read -r fullpkgpath
			do
				pkgname=$(basename "$fullpkgpath")
				pkgloc=$(dirname "$fullpkgpath")
				echo -e "macOS Installer: $pkgname\nPath: $pkgloc"
				if $suspack ; then
					echo -e "Opening in Suspicious Package...\n"
					if command -v spkg &>/dev/null ; then
						spkg --reveal-file / "$fullpkgpath" 2>/dev/null &
					else
						open -a "Suspicious Package" "$fullpkgpath" 2>/dev/null &
					fi
				elif $pacifist ; then
					echo -e "Opening in Pacifist...\n"
					open -a "Pacifist" "$fullpkgpath" 2>/dev/null &
				fi
			done < <(echo "$fullpkgpathall")
		fi
	fi
}

read -d '' bundleids <<"EOB"
com.apple.installer;_installer
EOB

rawcheck=$(echo "$bundleids" | grep "^$bid;" 2>/dev/null)
if [[ $rawcheck ]] ; then
	procedure=$(echo "$rawcheck" | awk -F";" '{print $2}')
	echo -e "*** APP LAUNCHED [$currentdate] ***\n$bid\nExecuting: $procedure"
	"$procedure"
fi

exit