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[docs] Revise pip-install packages for PostgresSaver in "how-to/Persistence" notebook (#4752)
revise pip-install packages for PostgresSaver usage in how-to page
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@@ -184,7 +184,7 @@
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"??? example \"Example: using [Postgres](https://pypi.org/project/langgraph-checkpoint-postgres/) checkpointer\"\n",
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"\n",
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" ```\n",
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" pip install -U psycopg psycopg-pool langgraph langgraph-checkpoint-postgres\n",
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" pip install -U \"psycopg[binary,pool]\" langgraph langgraph-checkpoint-postgres\n",
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" ```\n",
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"\n",
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" !!! Setup\n",
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@@ -1129,7 +1129,7 @@
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"??? example \"Example: using [Postgres](https://pypi.org/project/langgraph-checkpoint-postgres/) store\"\n",
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"\n",
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" ```\n",
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" pip install -U psycopg psycopg-pool langgraph langgraph-checkpoint-postgres\n",
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" pip install -U \"psycopg[binary,pool]\" langgraph langgraph-checkpoint-postgres\n",
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" ```\n",
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"\n",
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" !!! Setup\n",
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