[jonasdekeukelaere]

A fresh install fails on the MediaLibrary module:

The "Symfony\Component\Messenger\MessageBusInterface" service or alias has been removed or inlined when the container was compiled.

MediaLibrary\Installer\Installer::loadMediaFolders() fetches the bus with Model::get(MessageBusInterface::class). config.yml makes that alias public, but the install kernel only loads config_install.yml, where the alias stays private. MediaLibrary is a required module, so every new install hits this.

This adds the same public alias to config_install.yml.

Checked with bin/console --env=install debug:container (alias is public) and debug:messenger (CreateMediaFolder handler is registered in the install env).

Summary by Sourcery

Bug Fixes:

• Fix fresh-install failures in the MediaLibrary step by making the Symfony Messenger message bus available through the install container.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

The install environment now exposes the default Messenger bus through the public MessageBusInterface alias, preventing the MediaLibrary installer from failing when it retrieves the bus during a fresh installation.

Sequence diagram for MediaLibrary installation message bus lookup

sequenceDiagram
    participant Installer as MediaLibrary_Installer
    participant Container as Install_Container
    participant Bus as messenger.bus.default
    participant Handler as CreateMediaFolder_Handler

    Installer->>Container: Model::get(MessageBusInterface::class)
    Container->>Bus: resolve public alias
    Installer->>Bus: dispatch(CreateMediaFolder)
    Bus->>Handler: handle(CreateMediaFolder)

Loading

File-Level Changes

Change	Details	Files
Expose the Messenger bus alias in the installation service container so MediaLibrary can resolve it during fresh installs.	Add a public alias from MessageBusInterface to messenger.bus.default in the install-only configuration. Keep the change scoped to config_install.yml because the regular configuration is not loaded by the install kernel.	app/config/config_install.yml

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[sourcery-ai]

Hey - I've reviewed your changes and they look great!

Sourcery assessment

Approved.

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[jonasdekeukelaere]

Tested end-to-end: a full install (multilanguage, 5 languages, stock modules incl. the required MediaLibrary) now completes, where it previously failed on the MediaLibrary step with the MessageBusInterface error.