
During the last update, `hydra-notify` was rewritten as a daemon which listens to postgresql notifications for each build[1]. The module uses the `hydra-notify.service` unit from upstream's Hydra module and the VM test ensures that email notifications are sent properly. Also updated `hydra-init.service` to install `pg_trgm` on a local database if needed[2]. [1]c7861b85c4
[2]8a0a5ec3a3