checkpointpostgres==2.0.18

langgraph-checkpoint-postgres 2.0.18

Summary of Changes

• Made SQL migrations in PostgresStore more resilient by adding IF NOT EXISTS clauses to column additions and index creation (#3880)

Detailed Changes

langgraph.store.postgres.base.Migration

• Added IF NOT EXISTS clauses to column additions in ALTER TABLE statements and index creation in CREATE INDEX statements to prevent failures when the columns or index already exist (#3880)