From 3cf4c5d09b0c972c1fe5d15c23cfc9c75276064b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phan=20Kochen?= <git@stephank.nl>
Date: Tue, 11 May 2021 21:10:57 +0200
Subject: [PATCH] swiProlog: fix darwin build

---
 pkgs/development/compilers/swi-prolog/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/compilers/swi-prolog/default.nix b/pkgs/development/compilers/swi-prolog/default.nix
index addf64138011..cb4cf580a0e9 100644
--- a/pkgs/development/compilers/swi-prolog/default.nix
+++ b/pkgs/development/compilers/swi-prolog/default.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation {
 
   # Add the packInstall path to the swipl pack search path
   postPatch = ''
-    echo "user:file_search_path(pack, '$out/lib/swipl/pack')." >> /build/$sourceRoot/boot/init.pl
+    echo "user:file_search_path(pack, '$out/lib/swipl/pack')." >> boot/init.pl
   '';
 
   nativeBuildInputs = [ cmake pkg-config ];