From 9060376bcde5a023b14d80c7bfdb25f5aeabb57f Mon Sep 17 00:00:00 2001
From: Jaka Hudoklin <jakahudoklin@gmail.com>
Date: Thu, 12 Feb 2015 18:39:37 +0100
Subject: [PATCH] buildNodePackage: patch shebangs only in text files

---
 pkgs/development/web/nodejs/build-node-package.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/web/nodejs/build-node-package.nix b/pkgs/development/web/nodejs/build-node-package.nix
index e385c0d40c4..1965521ba81 100644
--- a/pkgs/development/web/nodejs/build-node-package.nix
+++ b/pkgs/development/web/nodejs/build-node-package.nix
@@ -64,8 +64,8 @@ let
     patchShebangs = dir: ''
         node=`type -p node`
         coffee=`type -p coffee || true`
-        find -L ${dir} -type f -print0 | \
-        xargs -0 sed --follow-symlinks -i \
+        find -L ${dir} -type f -print0 | xargs -0 grep -Il . | \
+        xargs sed --follow-symlinks -i \
             -e 's@#!/usr/bin/env node@#!'"$node"'@' \
             -e 's@#!/usr/bin/env coffee@#!'"$coffee"'@' \
             -e 's@#!/.*/node@#!'"$node"'@' \