Yunohost v2.0.0: Is the rollback of module migrations supported?

Question

The goal is to revert database schema changes applied during a module upgrade on Yunohost v2.0.0. The core relies on Symfony/Doctrine migrations, yet no generic rollback command is exposed to undo all module‑specific changes in one step.
Current constraints include a manual backup dump that must be restored to recover from a failed migration, which is non‑atomic and does not isolate individual module changes. Modules that add custom schema alterations often lack downgrade scripts, leaving irreversible states that cannot be undone by any existing tool.
Key unresolved questions are:

Does Yunohost v2.0.0 provide any command to roll back all module migrations in a single action?
  If not, what is the recommended workflow or tooling to automate a partial rollback of specific module changes?
  Are there plans to introduce a '--rollback' flag or similar feature in upcoming releases?

Tasadduq Burney · Answer

Yunohost v2.0.0 does not provide a built-in command to roll back module migrations in a single action. The migration framework executes only "up" scripts during module installation or uninstallation; there is no guaranteed "down" script execution path.
Confirmed behavior: module migrations are driven by scripts located in /etc/yunohost/modules//migration/. The yunohost module uninstall command removes the module package but does not reverse database schema or data changes applied by prior migrations. Modules that add custom schema alterations often lack downgrade scripts, leaving irreversible states that require manual intervention.
Practical verification steps (non-prescriptive):

List the module's migration scripts: ls /etc/yunohost/modules//migration/.
  Check for any file named or structured as a "down" reversal script.
  If no "down" script exists, the only supported rollback method is restoring a pre-migration database backup.

Uncertainty note: The presence or absence of a reversible "down" script varies by module. Reviewing the specific module's migration directory is required to determine whether a partial rollback is feasible without full database restoration.
To refine the recommendation, could you confirm whether the target module's migration directory contains a "down" script or documented reversal procedure?

Yunohost v2.0.0: Is the rollback of module migrations supported?

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