From 8c16648f56a462577414e2484350d9f2e2c295d0 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Sat, 28 Mar 2015 11:16:34 +0100
Subject: [PATCH] ghcjs: fix evaluation error in with-packages-wrapper.nix

---
 pkgs/development/haskell-modules/with-packages-wrapper.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/haskell-modules/with-packages-wrapper.nix b/pkgs/development/haskell-modules/with-packages-wrapper.nix
index d2116a879d5..e50672221eb 100644
--- a/pkgs/development/haskell-modules/with-packages-wrapper.nix
+++ b/pkgs/development/haskell-modules/with-packages-wrapper.nix
@@ -51,7 +51,7 @@ buildEnv {
   postBuild = ''
     . ${makeWrapper}/nix-support/setup-hook
 
-    ${lib.optionalString ghc.isGhcjs ''
+    ${optionalString ghc.isGhcjs ''
     cp -r ${ghc}/${ghc.libDir}/* ${libDir}/
     ''}