[Unit]
Description=Rotate GNOME wallpaper

[Service]
Type=oneshot
Environment=DISPLAY=:0
Environment=WALLPAPER_DIR=/home/%u/Pictures/wallpaper
EnvironmentFile=-/home/%u/.config/systemd/user/gnome-rotate-wallpaper.conf
ExecStart=/bin/bash /usr/local/bin/gnome_rotate_wallpaper

[Install]
WantedBy=default.target