From bd2ecba62240d68ee3262fc9949ccd963180e02c Mon Sep 17 00:00:00 2001
From: Nuno Campos <nuno@langchain.dev>
Date: Tue, 17 Sep 2024 09:29:16 -0700
Subject: [PATCH] Fix for py 3.9

---
 libs/langgraph/langgraph/utils/aio.py | 8 +++++++-
 libs/langgraph/poetry.lock            | 6 +++---
 libs/langgraph/pyproject.toml         | 2 +-
 3 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/libs/langgraph/langgraph/utils/aio.py b/libs/langgraph/langgraph/utils/aio.py
index 3d0f71e06..bcddd11e3 100644
--- a/libs/langgraph/langgraph/utils/aio.py
+++ b/libs/langgraph/langgraph/utils/aio.py
@@ -1,11 +1,17 @@
 import asyncio
+import sys
+
+PY_310 = sys.version_info >= (3, 10)
 
 
 class Queue(asyncio.Queue):
     async def wait(self):
         """If queue is empty, wait until an item is available."""
         while self.empty():
-            getter = self._get_loop().create_future()
+            if PY_310:
+                getter = self._get_loop().create_future()
+            else:
+                getter = self._loop.create_future()
             self._getters.append(getter)
             try:
                 await getter
diff --git a/libs/langgraph/poetry.lock b/libs/langgraph/poetry.lock
index b6f161afa..ba50565a8 100644
--- a/libs/langgraph/poetry.lock
+++ b/libs/langgraph/poetry.lock
@@ -1238,7 +1238,7 @@ typing-extensions = ">=4.7"
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "1.0.9"
+version = "1.0.10"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 optional = false
 python-versions = "^3.9.0,<4.0"
@@ -1255,7 +1255,7 @@ url = "../checkpoint"
 
 [[package]]
 name = "langgraph-checkpoint-postgres"
-version = "1.0.6"
+version = "1.0.7"
 description = "Library with a Postgres implementation of LangGraph checkpoint saver."
 optional = false
 python-versions = "^3.9.0,<4.0"
@@ -3202,4 +3202,4 @@ test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools",
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.9.0,<4.0"
-content-hash = "f72e42e6f957927f9acf19a838ad5331eb2ed11f0e58df3a6d3240eafb3dc057"
+content-hash = "73c2dec0a0e833ad8742ebfca86d8e3d602a8a63671a782d21d8e0079a02d448"
diff --git a/libs/langgraph/pyproject.toml b/libs/langgraph/pyproject.toml
index 655970f60..a583db910 100644
--- a/libs/langgraph/pyproject.toml
+++ b/libs/langgraph/pyproject.toml
@@ -28,7 +28,7 @@ pytest-repeat = "^0.9.3"
 langgraph-checkpoint = {path = "../checkpoint", develop = true}
 langgraph-checkpoint-sqlite = {path = "../checkpoint-sqlite", develop = true}
 langgraph-checkpoint-postgres = {path = "../checkpoint-postgres", develop = true}
-psycopg = {extras = ["binary"], version = ">=3.0.0"}
+psycopg = {extras = ["binary"], version = ">=3.0.0", python = ">=3.10"}
 uvloop = "^0.20.0"
 pyperf = "^2.7.0"
 py-spy = "^0.3.14"