livcxx build

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;
   };
 }

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;
   };
 }

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

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;

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;
   };
 
 

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 { };