From 540f1e4f84858d684120c29d17a3d0c4e0c86a20 Mon Sep 17 00:00:00 2001
From: sternenseemann <sternenseemann@systemli.org>
Date: Thu, 2 Apr 2026 20:34:34 +0200
Subject: [PATCH] haskellPackages.socket: avoid test race condition with tasty
 >= 1.5.4

---
 .../haskell-modules/configuration-common.nix           | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 52b192c4bad6..ccb135b8700b 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -384,6 +384,16 @@ with haskellLib;
     })
   ] super.criterion;
 
+  # Avoid rebinding to the same port with tasty >= 1.5.4 parallelism
+  # https://github.com/lpeterse/haskell-socket/pull/73
+  socket = appendPatches [
+    (pkgs.fetchpatch {
+      name = "socket-tasty-1.5.4.patch";
+      url = "https://github.com/lpeterse/haskell-socket/commit/a2687d9f1a60cfb72f85962c501a68d110ed6de0.patch";
+      hash = "sha256-21qkRFnRF6nuM1BILps8o5A/QvaVQ6SkKxO0u2goXos=";
+    })
+  ] super.socket;
+
   # Expected failures are fixed as of GHC-9.10,
   # but the tests haven't been updated yet.
   # https://github.com/ocharles/weeder/issues/198