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Within LTS Haskell 23.21 (ghc-9.8.4)

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  1. runMigrationSilent :: forall (m :: Type -> Type) . MonadUnliftIO m => Migration -> ReaderT SqlBackend m [Text]

    persistent Database.Persist.Sql.Migration

    Same as runMigration, but returns a list of the SQL commands executed instead of printing them to stderr. This function silences the migration by remapping stderr. As a result, it is not thread-safe and can clobber output from other parts of the program. This implementation method was chosen to also silence postgresql migration output on stderr, but is not recommended!

  2. runMigrationSilent :: MonadSqlQuery m => Migration -> m [Text]

    persistent-mtl Database.Persist.Sql.Shim

    The lifted version of runMigrationSilent

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