From 6adc5cedae266349bd7440099379b2fa9e959ca3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Tue, 21 Aug 2012 15:29:07 +0200
Subject: [PATCH] stdenv: Add `isGlibc' function.

---
 pkgs/stdenv/generic/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/stdenv/generic/default.nix b/pkgs/stdenv/generic/default.nix
index 749de01deff6..7a8c74506b74 100644
--- a/pkgs/stdenv/generic/default.nix
+++ b/pkgs/stdenv/generic/default.nix
@@ -30,7 +30,7 @@ let
           lib.filter lib.isDerivation initialPath;
       }
 
-      // {
+      // rec {
 
         meta = {
           description = "The default build environment for Unix packages in Nixpkgs";
@@ -96,6 +96,9 @@ let
                || result.system == "armv7l-linux"
                || result.system == "mips64el-linux";
         isGNU = result.system == "i686-gnu";      # GNU/Hurd
+        isGlibc = isGNU                           # useful for `stdenvNative'
+               || isLinux
+               || result.system = "x86_64-kfreebsd-gnu";
         isSunOS = result.system == "i686-solaris"
                || result.system == "x86_64-solaris";
         isCygwin = result.system == "i686-cygwin";