Postgres unique index with expressions is incorrectly transferred

[nefremov]

Hello,
My source Postgres 11 db has the following index:

create unique index ix_permission_unique on permissions(tenant_id, name, coalesce(scope_type, ''), coalesce(scope_id, ''));

COALESCE expressions are used to allow NULL only once in nullable columns (Postgres 15 has NULLS NOT DISTINCT option for this)

in destination database kitchen_sync creates index:

create unique index ix_permission_unique on permissions(tenant_id, name);

omitting expressions.

This leads to obvious sync error duplicate key value violates unique constraint "ix_permission_unique".

UPD:
destinasion db is Postgres 12. Source is synced to dedicated own db schema in destination db

[willbryant]

Yeah, not implemented yet unfortunately (https://github.com/willbryant/kitchen_sync/blob/main/SCHEMA.md#user-content-schema-things-currently-ignored).