From fe80df2ba677a0715a95f80dd5cdcfb41d87adfe Mon Sep 17 00:00:00 2001
From: Gaetan Lepage <gaetan@glepage.com>
Date: Fri, 6 Jun 2025 11:24:42 +0200
Subject: [PATCH] python3Packages.mcp: skip flaky test on darwin

---
 .../python-modules/mcp/default.nix            | 30 +++++++++++--------
 1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/pkgs/development/python-modules/mcp/default.nix b/pkgs/development/python-modules/mcp/default.nix
index 71c8c93869ac..ed05bed977be 100644
--- a/pkgs/development/python-modules/mcp/default.nix
+++ b/pkgs/development/python-modules/mcp/default.nix
@@ -1,5 +1,6 @@
 {
   lib,
+  stdenv,
   buildPythonPackage,
   fetchFromGitHub,
 
@@ -100,22 +101,27 @@ buildPythonPackage rec {
     "ignore::pydantic.warnings.PydanticDeprecatedSince211"
   ];
 
-  disabledTests = [
-    # attempts to run the package manager uv
-    "test_command_execution"
+  disabledTests =
+    [
+      # attempts to run the package manager uv
+      "test_command_execution"
 
-    # performance-dependent test
-    "test_messages_are_executed_concurrently"
+      # performance-dependent test
+      "test_messages_are_executed_concurrently"
 
-    # ExceptionGroup: unhandled errors in a TaskGroup (1 sub-exception)
-    "test_client_session_version_negotiation_failure"
+      # ExceptionGroup: unhandled errors in a TaskGroup (1 sub-exception)
+      "test_client_session_version_negotiation_failure"
 
-    # AttributeError: 'coroutine' object has no attribute 'client_metadata'
-    "TestOAuthClientProvider"
+      # AttributeError: 'coroutine' object has no attribute 'client_metadata'
+      "TestOAuthClientProvider"
 
-    # inline_snapshot._exceptions.UsageError: snapshot value should not change. Use Is(...) for dynamic snapshot parts
-    "test_build_metadata"
-  ];
+      # inline_snapshot._exceptions.UsageError: snapshot value should not change. Use Is(...) for dynamic snapshot parts
+      "test_build_metadata"
+    ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
+      # Flaky: ExceptionGroup: unhandled errors in a TaskGroup (1 sub-exception)
+      "test_notification_validation_error"
+    ];
 
   __darwinAllowLocalNetworking = true;