From 31d72a68f770442fa2e8c22ddb88b19e84bc87d7 Mon Sep 17 00:00:00 2001
From: Sarah Clark <seclark@nextquestion.net>
Date: Sat, 11 Jul 2026 12:19:14 -0700
Subject: [PATCH] python3Packages.langchain-community: 0.4.1 -> 0.4.2

---
 .../python-modules/langchain-community/default.nix | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/pkgs/development/python-modules/langchain-community/default.nix b/pkgs/development/python-modules/langchain-community/default.nix
index ccc254acac7d..8bf1c6cc0e4f 100644
--- a/pkgs/development/python-modules/langchain-community/default.nix
+++ b/pkgs/development/python-modules/langchain-community/default.nix
@@ -5,7 +5,7 @@
   pythonAtLeast,
 
   # build-system
-  pdm-backend,
+  hatchling,
 
   # dependencies
   aiohttp,
@@ -23,9 +23,6 @@
 
   # tests
   blockbuster,
-  duckdb,
-  duckdb-engine,
-  httpx,
   langchain-tests,
   lark,
   pandas,
@@ -43,19 +40,19 @@
 
 buildPythonPackage rec {
   pname = "langchain-community";
-  version = "0.4.1";
+  version = "0.4.2";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain-community";
     tag = "libs/community/v${version}";
-    hash = "sha256-N92YDmej2shQQlktr0veFOKyGFWemFj0hdJIYu1rYSc=";
+    hash = "sha256-I9xULsg+tlXM3Brh6Xa5xvFENx8zn4FRZ1/evNEh8UY=";
   };
 
   sourceRoot = "${src.name}/libs/community";
 
-  build-system = [ pdm-backend ];
+  build-system = [ hatchling ];
 
   # Only needed for mixed python 3.12/3.13 builds
   pythonRelaxDeps = [
@@ -81,9 +78,6 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [
     blockbuster
-    duckdb
-    duckdb-engine
-    httpx
     langchain-tests
     lark
     pandas