[Unit]
Description=Shairport-sync
Wants=network.target
Requires=avahi-daemon.service
After=network.target sound.target avahi-daemon.service

[Service]
Type=simple
# Avahi daemon needs some time until fully ready
ExecStartPre=/bin/sleep 3
ExecStart=/usr/bin/shairport-sync
Restart=always
RestartSec=5

[Install]
WantedBy=multi-user.target