From 4c97e4fbffd5cba4fb1ae32172b730658972550a Mon Sep 17 00:00:00 2001
From: Eric Sagnes <eric.sagnes@gmail.com>
Date: Mon, 1 Aug 2016 18:34:54 +0900
Subject: [PATCH] make tarball: refactor with fileContents

---
 pkgs/top-level/make-tarball.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/top-level/make-tarball.nix b/pkgs/top-level/make-tarball.nix
index b664dceaa954..2fe69390ec5b 100644
--- a/pkgs/top-level/make-tarball.nix
+++ b/pkgs/top-level/make-tarball.nix
@@ -15,7 +15,7 @@ releaseTools.sourceTarball rec {
   src = nixpkgs;
 
   inherit officialRelease;
-  version = builtins.readFile ../../.version;
+  version = pkgs.lib.fileContents ../../.version;
   versionSuffix = "pre${toString nixpkgs.revCount}.${nixpkgs.shortRev}";
 
   buildInputs = [ nix.out jq ];