From c4371afd06ae0185aef6bb6d503e2629b5c7cd82 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Wed, 19 Mar 2014 19:56:51 +0100
Subject: [PATCH] stdenv/setup.sh: make substitute* not drop EOF newline

This should solve #1982.
---
 pkgs/stdenv/generic/setup.sh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
index d79131ac067..1d79a45678c 100644
--- a/pkgs/stdenv/generic/setup.sh
+++ b/pkgs/stdenv/generic/setup.sh
@@ -304,9 +304,11 @@ substitute() {
 
     local -a params=("$@")
 
-    local n p pattern replacement varName
+    local n p pattern replacement varName content
 
-    local content="$(cat $input)"
+    # a slightly hacky way to keep newline at the end
+    content="$(cat $input; echo -n X)"
+    content="${content%X}"
 
     for ((n = 2; n < ${#params[*]}; n += 1)); do
         p=${params[$n]}