From 581804a146079a6c71514130c4efe414ffcf5e83 Mon Sep 17 00:00:00 2001
From: Louis Bettens <louis@bettens.info>
Date: Wed, 1 Mar 2023 09:08:05 +0100
Subject: [PATCH] slstatus: fix overriden build

---
 pkgs/applications/misc/slstatus/default.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/misc/slstatus/default.nix b/pkgs/applications/misc/slstatus/default.nix
index ac8170ed551c..4f022d81f62c 100644
--- a/pkgs/applications/misc/slstatus/default.nix
+++ b/pkgs/applications/misc/slstatus/default.nix
@@ -21,7 +21,8 @@ stdenv.mkDerivation rec {
   };
 
   configFile = lib.optionalString (conf!=null) (writeText "config.def.h" conf);
-  preBuild = lib.optionalString (conf!=null) "cp ${configFile} config.def.h" + ''
+  preBuild = ''
+    ${lib.optionalString (conf!=null) "cp ${configFile} config.def.h"}
     makeFlagsArray+=(LDLIBS="-lX11 -lxcb -lXau -lXdmcp" CC=$CC)
   '';