From b24ce2ae636a17352c831c8d0c4bfa62d1e8cd0c Mon Sep 17 00:00:00 2001
From: Shea Levy <shea@shealevy.com>
Date: Thu, 15 Feb 2018 11:50:24 -0500
Subject: [PATCH] Handle sourceRoots with leading dashes

---
 pkgs/stdenv/generic/setup.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
index e4a77af199b9..d7a4781448ae 100644
--- a/pkgs/stdenv/generic/setup.sh
+++ b/pkgs/stdenv/generic/setup.sh
@@ -866,7 +866,7 @@ unpackPhase() {
     # necessary when sources have been copied from other store
     # locations.
     if [ "${dontMakeSourcesWritable:-0}" != 1 ]; then
-        chmod -R u+w "$sourceRoot"
+        chmod -R u+w -- "$sourceRoot"
     fi
 
     runHook postUnpack