From adfd46f70d40fca9f14603a15a8ac15089debab8 Mon Sep 17 00:00:00 2001
From: Sylvain Henry <sylvain@haskus.fr>
Date: Fri, 21 Feb 2025 13:04:40 +0100
Subject: [PATCH] Don't build Setup programs with -threaded

Revert ae0e752eeab7d5a185295801fe54157e9012e2ba
---
 cabal-install/src/Distribution/Client/SetupWrapper.hs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/cabal-install/src/Distribution/Client/SetupWrapper.hs b/cabal-install/src/Distribution/Client/SetupWrapper.hs
index 1b401ff6f7c..f0f977b9101 100644
--- a/cabal-install/src/Distribution/Client/SetupWrapper.hs
+++ b/cabal-install/src/Distribution/Client/SetupWrapper.hs
@@ -1070,7 +1070,10 @@ getExternalSetupMethod verbosity options pkg bt = do
               (program, extraOpts) =
                 case compilerFlavor compiler of
                   GHCJS -> (ghcjsProgram, ["-build-runner"])
-                  _ -> (ghcProgram, ["-threaded"])
+                  _ -> (ghcProgram, [])
+                    -- FIXME: don't enable -threaded unconditionnally: we may
+                    -- only have vanilla libraries (but maybe we don't have them
+                    -- either?)
               cabalDep =
                 maybe
                   []