http://forum.slitaz.org/topic/package-management-and-orphaned-packages/page/2#post-45182

tazorphan-yad.sh

#!/bin/sh

mkdir -p /tmp/ORPHAN
echo > /tmp/ORPHAN/ORPHANS.txt
echo 1 > /tmp/ORPHAN/UNINSTALLED.txt

while [ $(grep -c 1 /tmp/ORPHAN/UNINSTALLED.txt) == '1' ]; do
	echo > /tmp/ORPHAN/DEPENDENCIES.txt
	CHOICE=''
	DESCRIPTION=''

	for VERZ in /var/lib/tazpkg/installed/*; do
		. $VERZ/receipt
		for DEPENDENCY in $DEPENDS; do
			echo "$DEPENDENCY" >> /tmp/ORPHAN/DEPENDENCIES.txt
		done
	done

	for VERZ in /var/lib/tazpkg/installed/*; do
		PACKAGE=$(basename $VERZ)
		if [ -z "$(sed -n "s/^${PACKAGE}$/&/p" /tmp/ORPHAN/DEPENDENCIES.txt)" ] &&
		   [ $(grep -c $PACKAGE /tmp/ORPHAN/ORPHANS.txt) == '0' ]; then
			CHOICE="$CHOICE FALSE|$PACKAGE|$(tazpkg -d $PACKAGE | sed '1,3d;$d' | sed '$d')|"
			echo $PACKAGE >> /tmp/ORPHAN/ORPHANS.txt
		fi
	done

	echo 0 > /tmp/ORPHAN/UNINSTALLED.txt
	IFS='|'
	echo $CHOICE > /tmp/ORPHAN/CHOICE.txt

	yad \
		--list \
		--fullscreen \
		--text 'Pick orphaned Packages to uninstall' \
		--multiple \
		--checklist \
		--column='Pick' \
		--column='PACKAGE' \
		--column 'Description' \
		${CHOICE} \
		--print-column=2 \
		--separator=' ' \
		--button='Uninstall' \
		--button='cancel' | \
	while read PKG; do
		echo 1 > /tmp/ORPHAN/UNINSTALLED.txt
		echo y | tazpkg -r $PKG
	done
done

rm -r /tmp/ORPHAN

In addition to this script I coded another finding and removing orphaned packages after removal of another.
To be found under: https://gist.github.com/F1lou/c7cb839dfed6e86268045bba9ca86685