From 7831c5925b734539e3057a4dde9f3e3dc5be0303 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roman=20Smr=C5=BE?= <roman.smrz@seznam.cz>
Date: Fri, 17 May 2024 20:35:42 +0200
Subject: Avoid multithreading in wrapper on newer compilers

Changelog: Fix unshare failing with newer compilers
---
 erebos-tester.cabal | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/erebos-tester.cabal b/erebos-tester.cabal
index 18f0283..0cacc52 100644
--- a/erebos-tester.cabal
+++ b/erebos-tester.cabal
@@ -43,6 +43,13 @@ common common
 
 executable erebos-tester
   import: common
+  ghc-options:
+        -- disable interval timer to avoid spawing thread that breaks unshare(CLONE_NEWUSER)
+        -with-rtsopts=-V0
+  if impl(ghc >= 9.8)
+        ghc-options:
+            -- no multithreading is allowed for unshare(CLONE_NEWUSER)
+            -single-threaded
 
   main-is:             Wrapper.hs
   -- other-modules:
-- 
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