Switch the default async Postgres driver from asyncpg to psycopg3 (provider)#69089
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asyncpg moves to an opt-in extra of the postgres provider; psycopg (psycopg3) is now installed by default as the async metadata-database driver. This pairs with the Airflow 3.4.0 core change that derives postgresql+psycopg_async:// by default, which is safe behind transaction-mode PgBouncer with no extra configuration.
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Mirrors the async default switch (apache#69089): PostgresHook no longer requires psycopg2 at import time. The psycopg2-specific connection, cursor, and execute_values imports are now lazy/guarded and raise a clear AirflowOptionalProviderFeatureException if psycopg2 genuinely needs to be used but isn't installed. psycopg2-binary moves to a new [psycopg2] extra. Part of the migration tracked in apache#68453.
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Mirrors the async default switch (apache#69089): PostgresHook no longer requires psycopg2 at import time. The psycopg2-specific connection, cursor, and execute_values imports are now lazy/guarded and raise a clear AirflowOptionalProviderFeatureException if psycopg2 genuinely needs to be used but isn't installed. psycopg2-binary moves to a new [psycopg2] extra. Part of the migration tracked in apache#68453.
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Mirrors the async default switch (apache#69089): PostgresHook no longer requires psycopg2 at import time. The psycopg2-specific connection, cursor, and execute_values imports are now lazy/guarded and raise a clear AirflowOptionalProviderFeatureException if psycopg2 genuinely needs to be used but isn't installed. psycopg2-binary moves to a new [psycopg2] extra. Part of the migration tracked in apache#68453.
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Mirrors the async default switch (apache#69089): PostgresHook no longer requires psycopg2 at import time. The psycopg2-specific connection, cursor, and execute_values imports are now lazy/guarded and raise a clear AirflowOptionalProviderFeatureException if psycopg2 genuinely needs to be used but isn't installed. psycopg2-binary moves to a new [psycopg2] extra. Part of the migration tracked in apache#68453.
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Mirrors the async default switch (apache#69089): PostgresHook no longer requires psycopg2 at import time. The psycopg2-specific connection, cursor, and execute_values imports are now lazy/guarded and raise a clear AirflowOptionalProviderFeatureException if psycopg2 genuinely needs to be used but isn't installed. psycopg2-binary moves to a new [psycopg2] extra. Part of the migration tracked in apache#68453.
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Mirrors the async default switch (apache#69089): PostgresHook no longer requires psycopg2 at import time. The psycopg2-specific connection, cursor, and execute_values imports are now lazy/guarded and raise a clear AirflowOptionalProviderFeatureException if psycopg2 genuinely needs to be used but isn't installed. psycopg2-binary moves to a new [psycopg2] extra. Part of the migration tracked in apache#68453.
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Split from the below, see details there:
Important
Note to RMs: this introduces a breaking change that requires a major version bump!