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The nextcloud LDAP failure in CI 25939428268 traced to a variant-merge
propagation gap: when meta/services.yml declares a flag as a literal
and meta/variants.yml overrides that same flag, the merged value does
not reliably reach downstream `lookup('config', ...)` consumers.
Plugin tasks then run against a provider that the round's inventory
does not contain (e.g. `occ ldap:search` -> "Lost connection to LDAP
server"). The workaround is to anchor the base value to a
`'<role>' in group_names` expression so the inventory itself decides
whether the consumer activates.
Same anti-pattern applied to nine other shared-LDAP consumers:
funkwhale, keycloak, kix, openproject, opentalk, snipe-it, suitecrm,
taiga, web-svc-xmpp. Each had `services.ldap.enabled: true # nocheck:
dynamic-flag` paired with a dynamic `shared`. Replaced with
`"{{ 'svc-db-openldap' in group_names }}"` for both flags.
Add a regression guard at
tests/integration/roles/meta/services/test_variants_no_static_override.py
that fails whenever meta/variants.yml overrides a first-level
`services.<key>.enabled` or `services.<key>.shared` flag while the
base in meta/services.yml is a static literal. Rule
`variants-static-override` is catalogued in the suppression doc.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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