From c04e49289871232ff3c2fd1239b64c2513f18fd1 Mon Sep 17 00:00:00 2001
From: Wout Mertens <Wout.Mertens@gmail.com>
Date: Tue, 28 Oct 2014 23:10:26 +0100
Subject: stdenv: Prevent issues like #4266

Don't preserve hardlinks, and instead use reflinks if they're available.
---
 pkgs/stdenv/generic/setup.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'pkgs/stdenv/generic/setup.sh')

diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
index 24deac21c59f..fe801c6bb971 100644
--- a/pkgs/stdenv/generic/setup.sh
+++ b/pkgs/stdenv/generic/setup.sh
@@ -463,7 +463,9 @@ _defaultUnpack() {
     if [ -d "$fn" ]; then
 
         stripHash "$fn"
-        cp -prd --no-preserve=timestamps "$fn" $strippedName
+        # We can't preserve hardlinks because they may have been introduced by
+        # store optimization, which might break things in the build
+        cp -pr --reflink=auto --no-preserve=timestamps "$fn" $strippedName
 
     else
 
-- 
cgit 1.4.1