From 1dbd67ee820159c3829f04b2aba66451c43109e9 Mon Sep 17 00:00:00 2001
From: "William A. Kennington III" <william@wkennington.com>
Date: Mon, 18 May 2015 15:27:52 -0700
Subject: [PATCH] buildGoPackage: Don't print blank lines

---
 pkgs/development/go-modules/generic/default.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/go-modules/generic/default.nix b/pkgs/development/go-modules/generic/default.nix
index 34cf65b844d2..5860176ecad3 100644
--- a/pkgs/development/go-modules/generic/default.nix
+++ b/pkgs/development/go-modules/generic/default.nix
@@ -80,7 +80,9 @@ go.stdenv.mkDerivation (
                     exit 1
                 fi
             fi
-            echo "$OUT" >&2
+            if [ -n "$OUT" ]; then
+              echo "$OUT" >&2
+            fi
         done)
     fi