From a86966eefd42b8d09af5a8f014d81ef844b55e4c Mon Sep 17 00:00:00 2001
From: Andreas Rumpf <rumpf_a@web.de>
Date: Thu, 2 Feb 2017 11:01:26 +0100
Subject: [PATCH] attempt to make nimble work again

---
 compiler/modulegraphs.nim | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/compiler/modulegraphs.nim b/compiler/modulegraphs.nim
index 0ae7076d96..87a35b2900 100644
--- a/compiler/modulegraphs.nim
+++ b/compiler/modulegraphs.nim
@@ -50,7 +50,10 @@ proc newModuleGraph*(config: ConfigRef = nil): ModuleGraph =
   result.modules = @[]
   result.importStack = @[]
   result.inclToMod = initTable[int32, int32]()
-  result.config = config
+  if config.isNil:
+    result.config = newConfigRef()
+  else:
+    result.config = config
 
 proc resetAllModules*(g: ModuleGraph) =
   initStrTable(packageSyms)