patches and low-level development discussion

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 #!/usr/bin/sh --
# SPDX-License-Identifier: EUPL-1.2+
# SPDX-FileCopyrightText: 2026 Demi Marie Obenour <demiobenour@gmail.com>
set -euf
case ${1-} in
/dev/dri/card[0-9]*)
	first_dev=${1#/dev/dri/} extra_cards=
	shift
	;;
*)
	echo 'No card nodes found, cannot run Weston' >&2
	exit 1
	;;
esac
for i; do
	case $i in
	*,*) continue ;;
	/dev/dri/card[0-9]*) : ;;
	*)
		echo 'Bad name from execline script' >&2
		exit 1
		;;
	esac
	card_name=${i#/dev/dri/}
	case $card_name in */*) continue ;; esac
	if [ -z "$extra_cards" ]; then
		extra_cards=--additional-devices=$card_name
	else
		extra_cards=$extra_cards,$card_name
	fi
done
exec weston --backend=drm "--drm-device=$first_dev" $extra_cards -S "$WAYLAND_DISPLAY"