add horizon-service

[yalh76]

Problem

• https://github.com/YunoHost-Apps/pixelfed_ynh/issues/50

Solution

• Implement horizon service

PR Status

• [ ] Code finished.
• [ ] Tested with Package_check.
• [ ] Fix or enhancement tested.
• [ ] Upgrade from last version tested.
• [ ] Can be reviewed and tested.

Validation

---

• [ ] Code review
• [ ] Approval (LGTM)
  Code review and approval have to be from a member of @YunoHost/apps group
• CI succeeded :

When the PR is marked as ready to merge, you have to wait for 3 days before really merging it.

[lapineige]

I tried to upgrade.

Warning: Failed to stop pixelfed-horizon.service: Unit pixelfed-horizon.service not loaded. Info: Stopping a systemd service... Warning: -- No entries -- Info: Stop the service pixelfed-horizon Warning: !! Warning: pixelfed's script has encountered an error. Its execution was cancelled. Warning: !! Warning: Upgrade failed.

Is this because there is no horizon service yet, then everything fail ?

[yalh76]

Yes I have to fix that, the PR is not ready ^^

[lapineige]

Sorry 😄

Let me know when you need some tests :)