From 5c145f5ec410a7f7f8f643165edd04f8aaa03550 Mon Sep 17 00:00:00 2001
From: Fabian Affolter <mail@fabian-affolter.ch>
Date: Mon, 26 Jan 2026 11:40:27 +0100
Subject: [PATCH 1/3] python313Packages.mcp: 1.25.0 -> 1.26.0

Diff: https://github.com/modelcontextprotocol/python-sdk/compare/v1.25.0...v1.26.0

Changelog: https://github.com/modelcontextprotocol/python-sdk/releases/tag/v1.26.0
---
 pkgs/development/python-modules/mcp/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/mcp/default.nix b/pkgs/development/python-modules/mcp/default.nix
index 9df48a47c598..aac367856b61 100644
--- a/pkgs/development/python-modules/mcp/default.nix
+++ b/pkgs/development/python-modules/mcp/default.nix
@@ -42,14 +42,14 @@
 
 buildPythonPackage rec {
   pname = "mcp";
-  version = "1.25.0";
+  version = "1.26.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "modelcontextprotocol";
     repo = "python-sdk";
     tag = "v${version}";
-    hash = "sha256-fSQCvKaNMeCzguM2tcTJJlAeZQmzSJmbfEK35D8pQcs=";
+    hash = "sha256-TGkAyuBcIstL2BCZYBWoi7PhnhoBvap67sLWGe0QUoU=";
   };
 
   # time.sleep(0.1) feels a bit optimistic and it has been flaky whilst

From 11e9dc214c612b0ba68681fc6fbe926136c9a5c0 Mon Sep 17 00:00:00 2001
From: Fabian Affolter <mail@fabian-affolter.ch>
Date: Mon, 26 Jan 2026 11:42:10 +0100
Subject: [PATCH 2/3] python313Packages.mcp: migrate to finalAttrs

---
 pkgs/development/python-modules/mcp/default.nix | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/pkgs/development/python-modules/mcp/default.nix b/pkgs/development/python-modules/mcp/default.nix
index aac367856b61..b8536ececaa5 100644
--- a/pkgs/development/python-modules/mcp/default.nix
+++ b/pkgs/development/python-modules/mcp/default.nix
@@ -40,7 +40,7 @@
   requests,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "mcp";
   version = "1.26.0";
   pyproject = true;
@@ -48,7 +48,7 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "modelcontextprotocol";
     repo = "python-sdk";
-    tag = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-TGkAyuBcIstL2BCZYBWoi7PhnhoBvap67sLWGe0QUoU=";
   };
 
@@ -106,7 +106,7 @@ buildPythonPackage rec {
     pytestCheckHook
     requests
   ]
-  ++ lib.concatAttrValues optional-dependencies;
+  ++ lib.flatten (builtins.attrValues finalAttrs.passthru.optional-dependencies);
 
   disabledTests = [
     # attempts to run the package manager uv
@@ -152,7 +152,7 @@ buildPythonPackage rec {
   __darwinAllowLocalNetworking = true;
 
   meta = {
-    changelog = "https://github.com/modelcontextprotocol/python-sdk/releases/tag/${src.tag}";
+    changelog = "https://github.com/modelcontextprotocol/python-sdk/releases/tag/${finalAttrs.src.tag}";
     description = "Official Python SDK for Model Context Protocol servers and clients";
     homepage = "https://github.com/modelcontextprotocol/python-sdk";
     license = lib.licenses.mit;
@@ -161,4 +161,4 @@ buildPythonPackage rec {
       josh
     ];
   };
-}
+})

From 642ed6e41f2a5e2f8ae382a4105df9b2a8601cb9 Mon Sep 17 00:00:00 2001
From: Fabian Affolter <mail@fabian-affolter.ch>
Date: Tue, 27 Jan 2026 17:22:34 +0100
Subject: [PATCH 3/3] python313Packages.fastmcp: disable failing test

---
 pkgs/development/python-modules/fastmcp/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/python-modules/fastmcp/default.nix b/pkgs/development/python-modules/fastmcp/default.nix
index 017b9894c07c..996f00ccc253 100644
--- a/pkgs/development/python-modules/fastmcp/default.nix
+++ b/pkgs/development/python-modules/fastmcp/default.nix
@@ -158,6 +158,9 @@ buildPythonPackage (finalAttrs: {
     # AssertionError: assert len(caplog.records) == 1
     "test_log"
 
+    #  assert [TextContent(...e, meta=None)] == [TextContent(...e, meta=None)]
+    "test_read_resource_tool_works"
+
     # fastmcp.exceptions.ToolError: Unknown tool
     "test_multi_client_with_logging"
     "test_multi_client_with_elicitation"