From 2e26f7bef14678667c87dcb1f9e76dcf1e47ec3d Mon Sep 17 00:00:00 2001
From: Joel Taylor <me@joelt.io>
Date: Thu, 21 Aug 2014 16:15:31 -0700
Subject: [PATCH] livcxx build

---
 pkgs/development/libraries/libc++/default.nix     | 2 +-
 pkgs/development/libraries/libc++abi/default.nix  | 2 +-
 pkgs/development/libraries/readline/readline6.nix | 4 ----
 pkgs/stdenv/darwin/default.nix                    | 6 +++---
 pkgs/stdenv/default.nix                           | 8 ++++++++
 pkgs/top-level/all-packages.nix                   | 6 +++++-
 6 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/pkgs/development/libraries/libc++/default.nix b/pkgs/development/libraries/libc++/default.nix
index 32035709d8f9..1ec1a61716d8 100644
--- a/pkgs/development/libraries/libc++/default.nix
+++ b/pkgs/development/libraries/libc++/default.nix
@@ -26,6 +26,6 @@ in stdenv.mkDerivation rec {
     description = "A new implementation of the C++ standard library, targeting C++11";
     license = "BSD";
     maintainers = stdenv.lib.maintainers.shlevy;
-    platforms = stdenv.lib.platforms.linux;
+    platforms = stdenv.lib.platforms.unix;
   };
 }
diff --git a/pkgs/development/libraries/libc++abi/default.nix b/pkgs/development/libraries/libc++abi/default.nix
index aae3027fd629..141802d1616b 100644
--- a/pkgs/development/libraries/libc++abi/default.nix
+++ b/pkgs/development/libraries/libc++abi/default.nix
@@ -33,6 +33,6 @@ in stdenv.mkDerivation {
     description = "A new implementation of low level support for a standard C++ library";
     license = "BSD";
     maintainers = stdenv.lib.maintainers.shlevy;
-    platforms = stdenv.lib.platforms.linux;
+    platforms = stdenv.lib.platforms.unix;
   };
 }
diff --git a/pkgs/development/libraries/readline/readline6.nix b/pkgs/development/libraries/readline/readline6.nix
index bffa838d2b35..1555f255c51b 100644
--- a/pkgs/development/libraries/readline/readline6.nix
+++ b/pkgs/development/libraries/readline/readline6.nix
@@ -10,10 +10,6 @@ stdenv.mkDerivation (rec {
 
   propagatedBuildInputs = [ncurses];
 
-  preConfigure = ''
-    export CC=clang
-  '';
-
   patchFlags = "-p0";
   patches =
     [ ./link-against-ncurses.patch
diff --git a/pkgs/stdenv/darwin/default.nix b/pkgs/stdenv/darwin/default.nix
index d9668d0972cf..28c863b63b0b 100644
--- a/pkgs/stdenv/darwin/default.nix
+++ b/pkgs/stdenv/darwin/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, pkgs, config }:
+{ stdenv, pkgs, config, haveLibCxx }:
 
 import ../generic rec {
   inherit config;
@@ -27,11 +27,11 @@ import ../generic rec {
     nativePrefix = stdenv.lib.optionalString stdenv.isSunOS "/usr";
     nativeLibc = true;
     inherit stdenv;
-    libcxx = pkgs.libcxx.override {
+    libcxx = if haveLibCxx then pkgs.libcxx.override {
       libcxxabi = pkgs.libcxxabi.override {
         libunwind = pkgs.libunwindNative;
       };
-    };
+    } else null;
     binutils = import ../../build-support/native-darwin-cctools-wrapper {inherit stdenv;};
     clang = pkgs.clang_34;
     coreutils = pkgs.coreutils;
diff --git a/pkgs/stdenv/default.nix b/pkgs/stdenv/default.nix
index 8e8be748795c..665cefbfc43b 100644
--- a/pkgs/stdenv/default.nix
+++ b/pkgs/stdenv/default.nix
@@ -37,6 +37,14 @@ rec {
     inherit config;
     stdenv = stdenvNative;
     pkgs = stdenvNativePkgs;
+    haveLibCxx = true;
+  };
+
+  stdenvDarwinNaked = import ./darwin {
+    inherit config;
+    stdenv = stdenvNative;
+    pkgs = stdenvNativePkgs;
+    haveLibCxx = false;
   };
 
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 8e130d8c1b85..49b1cd9b1801 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1800,7 +1800,11 @@ let
 
   openssh_with_kerberos = pkgs.appendToName "with-kerberos" (openssh.override { withKerberos = true; });
 
-  opensp = callPackage ../tools/text/sgml/opensp { };
+  opensp = callPackage ../tools/text/sgml/opensp {
+    stdenv = if stdenv.isDarwin
+      then allStdenvs.stdenvDarwinNaked
+      else stdenv;
+  };
 
   spCompat = callPackage ../tools/text/sgml/opensp/compat.nix { };