From 6312640e83d7f093d5f41898a600b738127a0747 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stanis=C5=82aw=20Pitucha?= <git@viraptor.info>
Date: Tue, 21 Mar 2023 14:59:05 +1100
Subject: [PATCH] python310Packages.pygls: fix darwin on hydra

The tests need more open sockets than the provided default.
---
 pkgs/development/python-modules/pygls/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/development/python-modules/pygls/default.nix b/pkgs/development/python-modules/pygls/default.nix
index 5560e855d87f..7ca6b344c9a2 100644
--- a/pkgs/development/python-modules/pygls/default.nix
+++ b/pkgs/development/python-modules/pygls/default.nix
@@ -1,4 +1,5 @@
 { lib
+, stdenv
 , buildPythonPackage
 , pythonOlder
 , fetchFromGitHub
@@ -45,6 +46,11 @@ buildPythonPackage rec {
   # Fixes hanging tests on Darwin
   __darwinAllowLocalNetworking = true;
 
+  preCheck = lib.optionalString stdenv.isDarwin ''
+    # Darwin issue: OSError: [Errno 24] Too many open files
+    ulimit -n 1024
+  '';
+
   pythonImportsCheck = [ "pygls" ];
 
   meta = with lib; {