From 9f541bcdde9cbc718a3ce7bb4fb900a9d671def8 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Fri, 30 Aug 2013 10:42:40 +0200
Subject: [PATCH] pkgs/build-support/cabal: fix the logic of the 'noHaddock'
 flag that was broken in 27905ce17e1b1aed55edbff5856082b8c1b51fc7

---
 pkgs/build-support/cabal/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/build-support/cabal/default.nix b/pkgs/build-support/cabal/default.nix
index e8161e2e818..7f4d431c007 100644
--- a/pkgs/build-support/cabal/default.nix
+++ b/pkgs/build-support/cabal/default.nix
@@ -150,7 +150,7 @@ assert enableCheckPhase -> stdenv.lib.versionOlder "7" ghc.ghcVersion;
               ./Setup build
 
               export GHC_PACKAGE_PATH=$(${ghc.GHCPackages})
-              if [ -n "$noHaddock" ]; then
+              if [ -z "$noHaddock" ]; then
                 export LANG="en_US.UTF-8"
                 ./Setup haddock
                 unset LANG