* Better stdenv for Darwin: uses gcc, coreutils etc. built in Nix, but

external binutils (i.e., Apple's cctools in /usr/bin).

svn path=/nixpkgs/trunk/; revision=5706

pkgs/build-support/native-darwin-cctools-wrapper/builder.sh

@@ -0,0 +1,4 @@
+source $stdenv/setup
+
+ensureDir $out/bin
+ln -s /usr/bin/ld /usr/bin/as /usr/bin/ar /usr/bin/ranlib /usr/bin/strip $out/bin

pkgs/build-support/native-darwin-cctools-wrapper/default.nix

@@ -0,0 +1,6 @@
+{stdenv}:
+
+stdenv.mkDerivation {
+  name = "native-darwin-cctools-wrapper";
+  builder = ./builder.sh;
+}

pkgs/stdenv/default.nix

@@ -37,14 +37,13 @@ rec {
 
 
   # The Nix build environment.
-  stdenvNix = (import ./nix) {
-    stdenv = stdenvNative;
+  stdenvNix = (import ./nix) (rec {
+    stdenv = if system == "i686-darwin" then stdenvDarwin else stdenvNative; # !!! hack
     pkgs = allPackages {
-      bootStdenv = removeAttrs stdenvNative ["gcc"]; # Hack
+      bootStdenv = removeAttrs stdenv ["gcc"]; # Hack
       noSysDirs = false;
     };
-    inherit genericStdenv;
-  };
+  });
 
 
   # Linux standard environment.
@@ -81,6 +80,6 @@ rec {
     else if system == "i686-freebsd" then stdenvFreeBSD
     else if system == "i686-cygwin" then stdenvCygwin
     else if system == "powerpc-darwin" then stdenvDarwin
-    else if system == "i686-darwin" then stdenvDarwin
+    else if system == "i686-darwin" then stdenvNix
     else stdenvNative;
 }

pkgs/stdenv/nix/default.nix

@@ -1,6 +1,6 @@
-{stdenv, pkgs, genericStdenv}:
+{stdenv, pkgs}:
 
-genericStdenv {
+import ../generic {
   name = "stdenv-nix";
   preHook = ./prehook.sh;
   initialPath = (import ../common-path.nix) {pkgs = pkgs;};
@@ -11,7 +11,11 @@ genericStdenv {
     nativeTools = false;
     nativeGlibc = true;
     inherit stdenv;
-    inherit (pkgs) binutils;
+    binutils = 
+      if stdenv.system == "i686-darwin" || stdenv.system == "powerpc-darwin" then
+        import ../../build-support/native-darwin-cctools-wrapper {inherit stdenv;};
+      else
+        pkgs.binutils;
     gcc = pkgs.gcc.gcc;
     shell = pkgs.bash ~ /bin/sh;
   };

pkgs/stdenv/nix/prehook.sh

@@ -1,2 +1,9 @@
 export NIX_ENFORCE_PURITY=1
 export NIX_IGNORE_LD_THROUGH_GCC=1
+
+if test "$system" = "i686-darwin" -o "$system" = "powerpc-darwin"; then
+    export NIX_DONT_SET_RPATH=1
+    export NIX_NO_SELF_RPATH=1
+    dontFixLibtool=1
+    NIX_STRIP_DEBUG=0 # !!! do we still need this?
+fi