bblack@memex:~$ cat /usr/local/lib/systemd/system/sway.service
[Unit]
Description=sway autostart for bblack
Documentation=man:sway(5)
OnFailure=getty@tty1.service
Conflicts=getty@tty1.service
After=graphical.target

[Service]
User=bblack
ExecStart=/usr/bin/sway
WorkingDirectory=~
TTYPath=/dev/tty1
PAMName=login
EnvironmentFile=/home/bblack/.config/sway/env
TTYReset=yes
TTYVHangup=yes
TTYVTDisallocate=yes
Restart=on-success

[Install]
WantedBy=graphical.target