Linux systemd user service | base | fresh synthetic T3 home
$ t3 service install --base-dir $PROOF/account/base
Service installed · t3@0.1.8
Log: $PROOF/account/base/userdata/logs/boot-service.log
Run `t3 up` to choose how your other devices reach it.
Runtime A (0.1.8) is serving HTTP.
$ client RPC server.updateServer targetVersion=0.1.9
{"_tag":"Exit","requestId":"1","exit":{"_tag":"Success","value":{"targetVersion":"0.1.9","method":"boot-service","updateId":"fcccb8e9-fc9b-40fd-91a9-61b7e4f7a705"}}}
Selected runtime is serving HTTP: 0.1.9
{
  "protocol": 3,
  "activeVersion": "0.1.9",
  "update": {
    "id": "fcccb8e9-fc9b-40fd-91a9-61b7e4f7a705",
    "fromVersion": "0.1.8",
    "targetVersion": "0.1.9",
    "status": "committed"
  }
}
$ systemctl --user cat t3code.service | select ExecStart
ExecStart=$PROOF/account/base/runtime/versions/0.1.8/t3 __service-launcher
$ client RPC server.updateServer targetVersion=0.1.10
{"_tag":"Exit","requestId":"1","exit":{"_tag":"Success","value":{"targetVersion":"0.1.10","method":"boot-service","updateId":"90dfc732-206e-47e0-85f1-5ba66ea88e68"}}}
Selected runtime is serving HTTP: 0.1.10
{
  "protocol": 3,
  "activeVersion": "0.1.10",
  "update": {
    "id": "90dfc732-206e-47e0-85f1-5ba66ea88e68",
    "fromVersion": "0.1.9",
    "targetVersion": "0.1.10",
    "status": "committed"
  }
}
$ systemctl --user cat t3code.service | select ExecStart
ExecStart=$PROOF/account/base/runtime/versions/0.1.8/t3 __service-launcher
$ remove only runtime A (0.1.8), then systemctl --user restart t3code.service
Removed runtime A.

$ systemctl --user show t3code.service --property=ActiveState,SubState,ExecMainStatus,Result
Result=exit-code
ExecMainStatus=203
ActiveState=activating
SubState=auto-restart
Restart result: HTTP unavailable; selected runtime C cannot start.

Removed "$PROOF/account/.config/systemd/user/default.target.wants/t3code.service".
Stopped and disabled disposable service.