From b98c7ea4af439e436b768a599be065c128af5036 Mon Sep 17 00:00:00 2001
From: Sarah Clark <seclark@nextquestion.net>
Date: Mon, 23 Feb 2026 13:11:04 -0800
Subject: [PATCH 1/3] python3Packages.langgraph-checkpoint: 3.0.1 -> 4.0.0

---
 .../python-modules/langgraph-checkpoint/default.nix           | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/langgraph-checkpoint/default.nix b/pkgs/development/python-modules/langgraph-checkpoint/default.nix
index a2b12587dc51..4d1eb363635c 100644
--- a/pkgs/development/python-modules/langgraph-checkpoint/default.nix
+++ b/pkgs/development/python-modules/langgraph-checkpoint/default.nix
@@ -26,14 +26,14 @@
 
 buildPythonPackage rec {
   pname = "langgraph-checkpoint";
-  version = "3.0.1";
+  version = "4.0.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langgraph";
     tag = "checkpoint==${version}";
-    hash = "sha256-3hh1KyEIsp9JzhaJW1ycp179FGpggPYzg6OwnD/cTBM=";
+    hash = "sha256-IE9Y+kFkDN49SuwvTNwa2kK+Hig18sJPZmZCqHUP3DM=";
   };
 
   sourceRoot = "${src.name}/libs/checkpoint";

From 6a8c9fb83fc8e6360fa68d81b280577b48a4c36d Mon Sep 17 00:00:00 2001
From: Sarah Clark <seclark@nextquestion.net>
Date: Mon, 23 Feb 2026 13:24:40 -0800
Subject: [PATCH 2/3] python3Packages.langgraph-checkpoint-mongodb: apply
 correction after python-updater-script

---
 .../langgraph-checkpoint-mongodb/default.nix  | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/python-modules/langgraph-checkpoint-mongodb/default.nix b/pkgs/development/python-modules/langgraph-checkpoint-mongodb/default.nix
index db21b3b8fad7..2fbe14a3c830 100644
--- a/pkgs/development/python-modules/langgraph-checkpoint-mongodb/default.nix
+++ b/pkgs/development/python-modules/langgraph-checkpoint-mongodb/default.nix
@@ -2,6 +2,7 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  gitUpdater,
 
   # build-system
   hatchling,
@@ -14,14 +15,14 @@
 
 buildPythonPackage rec {
   pname = "langgraph-checkpoint-mongodb";
-  version = "0.11.0";
+  version = "0.3.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain-mongodb";
-    tag = "libs/langchain-mongodb/v${version}";
-    hash = "sha256-dO0dASjyNMxnbxZ/ry8lcJxedPdrv6coYiTjOcaT8/0=";
+    tag = "libs/langgraph-checkpoint-mongodb/v${version}";
+    hash = "sha256-vCiZ6Mp6aHmSEkLbeM6qTLJaxH0uoAdq80olTT5saX0=";
   };
 
   sourceRoot = "${src.name}/libs/langgraph-checkpoint-mongodb";
@@ -30,6 +31,10 @@ buildPythonPackage rec {
     hatchling
   ];
 
+  pythonRelaxDeps = [
+    "pymongo"
+  ];
+
   dependencies = [
     langgraph-checkpoint
     langchain-mongodb
@@ -41,6 +46,14 @@ buildPythonPackage rec {
   # Connection refused (to localhost:27017) for all tests
   doCheck = false;
 
+  passthru = {
+    # python updater script sets the wrong tag
+    skipBulkUpdate = true;
+    updateScript = gitUpdater {
+      rev-prefix = "libs/langgraph-checkpoint-mongodb/v";
+    };
+  };
+
   # no pythonImportsCheck as this package does not provide any direct imports
   pythonImportsCheck = [ "langgraph.checkpoint.mongodb" ];
 

From 4d7e5d825b33c04c5abe399df834d41e12cb8342 Mon Sep 17 00:00:00 2001
From: Sarah Clark <seclark@nextquestion.net>
Date: Mon, 23 Feb 2026 13:24:40 -0800
Subject: [PATCH 3/3] python3Packages.langgraph-checkpoint-mongodb: migrate to
 finalAttrs

---
 .../langgraph-checkpoint-mongodb/default.nix           | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/pkgs/development/python-modules/langgraph-checkpoint-mongodb/default.nix b/pkgs/development/python-modules/langgraph-checkpoint-mongodb/default.nix
index 2fbe14a3c830..f16e5a605c15 100644
--- a/pkgs/development/python-modules/langgraph-checkpoint-mongodb/default.nix
+++ b/pkgs/development/python-modules/langgraph-checkpoint-mongodb/default.nix
@@ -13,7 +13,7 @@
   pymongo,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "langgraph-checkpoint-mongodb";
   version = "0.3.1";
   pyproject = true;
@@ -21,11 +21,11 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain-mongodb";
-    tag = "libs/langgraph-checkpoint-mongodb/v${version}";
+    tag = "libs/langgraph-checkpoint-mongodb/v${finalAttrs.version}";
     hash = "sha256-vCiZ6Mp6aHmSEkLbeM6qTLJaxH0uoAdq80olTT5saX0=";
   };
 
-  sourceRoot = "${src.name}/libs/langgraph-checkpoint-mongodb";
+  sourceRoot = "${finalAttrs.src.name}/libs/langgraph-checkpoint-mongodb";
 
   build-system = [
     hatchling
@@ -60,8 +60,8 @@ buildPythonPackage rec {
   meta = {
     description = "Integrations between MongoDB, Atlas, LangChain, and LangGraph";
     homepage = "https://github.com/langchain-ai/langchain-mongodb/tree/main/libs/langgraph-checkpoint-mongodb";
-    changelog = "https://github.com/langchain-ai/langchain-mongodb/releases/tag/${src.tag}";
+    changelog = "https://github.com/langchain-ai/langchain-mongodb/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ sarahec ];
   };
-}
+})