From 9224c09098bfd420a79dca7d29963041937718bc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= <peterke@gmail.com>
Date: Tue, 29 Sep 2015 10:41:49 +0300
Subject: [PATCH] Display a proper error message if no GOPATH is set.

---
 xgo.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xgo.go b/xgo.go
index 6f0a1d1..767bd35 100644
--- a/xgo.go
+++ b/xgo.go
@@ -174,6 +174,9 @@ func compile(repo string, image string, remote string, branch string, pack strin
 		repo = pack.ImportPath
 
 		// Iterate over all the local libs and export the mount points
+		if os.Getenv("GOPATH") == "" {
+			log.Fatalf("No $GOPATH is set or forwarded to xgo")
+		}
 		for _, gopath := range strings.Split(os.Getenv("GOPATH"), string(os.PathListSeparator)) {
 			// Since docker sandboxes volumes, resolve any symlinks manually
 			sources := filepath.Join(gopath, "src")