From 7e86343de445b95814fe56d6f5cd5249ac3c26ca Mon Sep 17 00:00:00 2001
From: Sarah Clark <seclark@nextquestion.net>
Date: Fri, 27 Mar 2026 10:16:28 -0700
Subject: [PATCH] python3Packages.langchain: 1.2.12 -> 1.2.13

---
 pkgs/development/python-modules/langchain/default.nix | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/langchain/default.nix b/pkgs/development/python-modules/langchain/default.nix
index c8443c4360ef..580d6946580f 100644
--- a/pkgs/development/python-modules/langchain/default.nix
+++ b/pkgs/development/python-modules/langchain/default.nix
@@ -46,14 +46,14 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "langchain";
-  version = "1.2.12";
+  version = "1.2.13";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain";
     tag = "langchain==${finalAttrs.version}";
-    hash = "sha256-Z0noVsSu0OZchynlJSkIe0p076/0nay+1uS2ZXnztns=";
+    hash = "sha256-Eb9sXYUaBQn6f7IqgrSIbNz75g79Vka0RommZFJUQko=";
   };
 
   sourceRoot = "${finalAttrs.src.name}/libs/langchain_v1";
@@ -117,12 +117,16 @@ buildPythonPackage (finalAttrs: {
   disabledTests = [
     # Depends on shell's truncation style
     "test_truncation_indicator_present"
+    "test_truncation_by_bytes"
     # Depends on the sleep shell command
     "test_timeout_returns_error"
     # Can't see the shell session results when sandboxed
     "test_startup_and_shutdown_commands"
     # Timing sensitive tests
     "test_tool_retry_constant_backoff"
+    # AttributeError: 'ImportErrorProfileModel' object has no attribute 'profile'
+    # https://github.com/langchain-ai/langchain/issues/36312
+    "test_summarization_middleware_missing_profile"
   ];
 
   disabledTestPaths = [