[Unit]
Description=Mosaic tmux fleet holder
Documentation=https://git.mosaicstack.dev/mosaicstack/stack
After=default.target

[Service]
Type=oneshot
RemainAfterExit=yes
Environment=MOSAIC_TMUX_SOCKET=mosaic-factory
Environment=MOSAIC_TMUX_HOLDER=_holder
ExecStart=/bin/bash -lc 'tmux -L "$MOSAIC_TMUX_SOCKET" has-session -t "=${MOSAIC_TMUX_HOLDER}:0.0" 2>/dev/null || tmux -L "$MOSAIC_TMUX_SOCKET" new-session -d -s "$MOSAIC_TMUX_HOLDER" "while true; do sleep 3600; done"'
ExecStop=-/bin/bash -lc 'tmux -L "$MOSAIC_TMUX_SOCKET" kill-server'

[Install]
WantedBy=default.target