[solaechea]

Written with Claude Opus 5.5

Fixes #29.

Change

In roles/postgresql/tasks/setup-Debian.yml, installing the packages starts the server, and the locales in postgresql_locales are generated after that. The server only sees new locales once it restarts. That restart was a handler, so it waited for the end of the play, and any later role that created a database in the new locale failed:

Database query failed: invalid locale name: "en_US.UTF-8"

The role keeps the existing Restart postgresql handler, and now runs meta: flush_handlers right after generating the locales. The server therefore restarts straight away, and only when a locale was actually generated. A separate restart task conditioned on the locale result would fail ansible-lint's no-handler rule.

Testing

On a Debian 12 EC2 instance from the stock AMI, which only has C.UTF-8:

• Without the change: the locale was generated, but creating a database with en_US.UTF-8 in the same play failed with the error above.
• With the change: I first put the machine back in that state: locale removed, server restarted without it, and a manual CREATE DATABASE … LC_COLLATE 'en_US.UTF-8' failing. A rerun then generated the locale, the restart ran, and every database was created.
• When no locale is new, the handler isn't notified and nothing restarts.
• The EC2 test above ran the first version of this change, a separate restart task. The flush_handlers version runs the same restart at the same point in the play, but hasn't been rerun on EC2.
• prettier --check, yamllint and ansible-lint (production profile, postgresql role) pass.