From 636e5933e5ac6114d0f58d236728a041f0a50e4c Mon Sep 17 00:00:00 2001
From: Hraban Luyat <hraban@0brg.net>
Date: Wed, 29 May 2024 09:06:28 -0400
Subject: [PATCH] sbcl: configuration check: GC requires threads

https://sourceforge.net/p/sbcl/mailman/message/58776519/
---
 pkgs/development/compilers/sbcl/default.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/compilers/sbcl/default.nix b/pkgs/development/compilers/sbcl/default.nix
index 75ead6184aa8..a6b679b05a1a 100644
--- a/pkgs/development/compilers/sbcl/default.nix
+++ b/pkgs/development/compilers/sbcl/default.nix
@@ -7,7 +7,7 @@
   # to get rid of ${glibc} dependency.
 , purgeNixReferences ? false
 , coreCompression ? true
-, markRegionGC ? true
+, markRegionGC ? threadSupport
 , version
   # Set this to a lisp binary to use a custom bootstrap lisp compiler for SBCL.
   # Leave as null to use the default.  This is useful for local development of
@@ -157,6 +157,7 @@ stdenv.mkDerivation (self: rec {
   '';
 
   enableFeatures = with lib;
+    assert assertMsg (markRegionGC -> threadSupport) "SBCL mark region GC requires thread support";
     optional threadSupport "sb-thread" ++
     optional linkableRuntime "sb-linkable-runtime" ++
     optional coreCompression "sb-core-compression" ++