darwin: fix assorted xcbuild builds

This includes adding a new xcbuild-based libutil build to test the waters a bit there.
We'll need to get xcbuild into the stdenv bootstrap before we can make the main build,
but it's nice to see that it can work.

pkgs/development/tools/xcbuild/platform.nix

···
       Type = "ProductType";
       Name = "Dynamic Library";
       PackageTypes = [ "com.apple.package-type.mach-o-dylib" ];
+      DefaultBuildProperties = {
+        FULL_PRODUCT_NAME = "$(EXECUTABLE_NAME)";
+        MACH_O_TYPE = "mh_dylib";
+        REZ_EXECUTABLE = "YES";
+        EXECUTABLE_SUFFIX = ".$(EXECUTABLE_EXTENSION)";
+        EXECUTABLE_EXTENSION = "dylib";
+        DYLIB_COMPATIBILITY_VERSION = "1";
+        DYLIB_CURRENT_VERSION = "1";
+        FRAMEWORK_FLAG_PREFIX = "-framework";
+        LIBRARY_FLAG_PREFIX = "-l";
+        LIBRARY_FLAG_NOSPACE = "YES";
+        STRIP_STYLE = "debugging";
+        GCC_INLINES_ARE_PRIVATE_EXTERN = "YES";
+        CODE_SIGNING_ALLOWED = "YES";
+        CODE_SIGNING_REQUIRED = "NO";
+      };
     }
     {
       Identifier = "com.apple.product-type.library.static";
···
 in
 
 stdenv.mkDerivation {
-  name = "nixpkgs.platform";
+  name = "MacOSX.platform";
   buildInputs = [ xcbuild ];
   buildCommand = ''
     mkdir -p $out/
···
 
     mkdir -p $out/Developer/SDKs/
     cd $out/Developer/SDKs/
-    cp -r ${sdk} nix.nixpkgs.sdk
+    cp -r ${sdk} ${sdk.name}
   '';
 }

pkgs/development/tools/xcbuild/sdk.nix

···
 in
 
 stdenv.mkDerivation {
-  name = "nix.nixpkgs.sdk";
+  name = "MacOSX.sdk";
   buildInputs = [ xcbuild ];
   buildCommand = ''
     mkdir -p $out/

pkgs/os-specific/darwin/apple-source-releases/adv_cmds/xcode.nix

···
-{ stdenv, appleDerivation, fetchurl, xcbuild, libcxx }:
+{ stdenv, appleDerivation, fetchurl, xcbuild, ncurses, libutil-new }:
 
 appleDerivation {
+  # We can't just run the root build, because https://github.com/facebook/xcbuild/issues/264
+  dontUseXcbuild = true;
 
   # pkill requires special private headers that are unavailable in
   # NixPkgs. These ones are needed:
···
   patchPhase = ''
     substituteInPlace adv_cmds.xcodeproj/project.pbxproj \
       --replace "FD201DC214369B4200906237 /* pkill.c in Sources */," "" \
-      --replace "FDF278D60FC6204E00D7A3C6 /* locale.cc in Sources */," ""
+      --replace "FDF278D60FC6204E00D7A3C6 /* locale.cc in Sources */," "" \
+      --replace '/usr/lib/libtermcap.dylib' 'libncurses.dylib'
+  '';
+
+  buildPhase = ''
+    targets=$(xcodebuild -list \
+                | awk '/Targets:/{p=1;print;next} p&&/^\s*$/{p=0};p' \
+                | tail -n +2 | sed 's/^[ \t]*//' \
+                | grep -v -e Desktop -e Embedded -e mklocale -e colldef)
+
+    for i in $targets; do
+      xcodebuild -target $i
+    done
   '';
 
   # temporary install phase until xcodebuild has "install" support
···
     # ln -s $out/share/man/man1/pkill.1 $out/share/man/man1/pgrep.1
   '';
 
-  buildInputs = [ xcbuild libcxx ];
-
-  # temporary fix for iostream issue
-  NIX_CFLAGS_COMPILE = stdenv.lib.optionalString stdenv.isDarwin "-I${libcxx}/include/c++/v1";
+  buildInputs = [ xcbuild ncurses libutil-new ];
 
   meta = {
     platforms = stdenv.lib.platforms.darwin;

pkgs/os-specific/darwin/apple-source-releases/default.nix

···
     libresolv       = applePackage "libresolv"         "osx-10.11.6"     "09flfdi3dlzq0yap32sxidacpc4nn4va7z12a6viip21ix2xb2gf" {};
     Libsystem       = applePackage "Libsystem"         "osx-10.11.6"     "1nfkmbqml587v2s1d1y2s2v8nmr577jvk51y6vqrfvsrhdhc2w94" {};
     libutil         = applePackage "libutil"           "osx-10.11.6"     "1gmgmcyqdyc684ih7dimdmxdljnq7mzjy5iqbf589wc0pa8h5abm" {};
+    libutil-new     = applePackage "libutil/new.nix"   "osx-10.11.6"     "1gmgmcyqdyc684ih7dimdmxdljnq7mzjy5iqbf589wc0pa8h5abm" {};
     libunwind       = applePackage "libunwind"         "osx-10.11.6"     "0miffaa41cv0lzf8az5k1j1ng8jvqvxcr4qrlkf3xyj479arbk1b" {};
     mDNSResponder   = applePackage "mDNSResponder"     "osx-10.11.6"     "069incq28a78yh1bnr17h9cd5if5mwqpq8ahnkyxxx25fkaxgzcf" {};
     objc4           = applePackage "objc4"             "osx-10.11.6"     "00b7vbgxni8frrqyi69b4njjihlwydzjd9zj9x4z5dbx8jabkvrj" {};

pkgs/os-specific/darwin/apple-source-releases/file_cmds/default.nix

···
-{ stdenv, appleDerivation, xcbuild, zlib, bzip2, lzma }:
+{ stdenv, appleDerivation, xcbuild, zlib, bzip2, lzma, ncurses, libutil-new }:
 
 appleDerivation rec {
-  buildInputs = [ xcbuild zlib bzip2 lzma ];
+  buildInputs = [ xcbuild zlib bzip2 lzma ncurses libutil-new ];
 
   # some commands not working:
   # mtree: _simple.h not found
···
     substituteInPlace file_cmds.xcodeproj/project.pbxproj \
       --replace "FC8A8CAA14B655FD001B97AD /* PBXTargetDependency */," "" \
       --replace "FC8A8C9C14B655FD001B97AD /* PBXTargetDependency */," "" \
-      --replace "productName = file_cmds;" ""
+      --replace "productName = file_cmds;" "" \
+      --replace '/usr/lib/libcurses.dylib' 'libncurses.dylib'
     sed -i -re "s/name = ([a-zA-Z]+);/name = \1; productName = \1;/" file_cmds.xcodeproj/project.pbxproj
   '';
 
   # temporary install phase until xcodebuild has "install" support
   installPhase = ''
     mkdir -p $out/bin/
-    install file_cmds-*/Build/Products/Release/* $out/bin/
+    install file_cmds-*/Build/Products/Release/* $out/bin
 
     for n in 1; do
       mkdir -p $out/share/man/man$n

pkgs/os-specific/darwin/apple-source-releases/libutil/new.nix

···
+{ stdenv, appleDerivation, xcbuild }:
+
+# TODO: make this the official libutil expression once we've integrated xcbuild in the bootstrap
+appleDerivation {
+  buildInputs = [ xcbuild ];
+
+  dontUseXcbuild = true;
+
+  prePatch = ''
+    substituteInPlace tzlink.c \
+      --replace '#include <xpc/xpc.h>' ""
+  '';
+
+  buildPhase = ''
+    xcodebuild -target util
+  '';
+
+  installPhase = ''
+    mkdir -p $out/lib $out/include
+
+    cp libutil-*/Build/Products/Release/*.dylib $out/lib
+    cp libutil-*/Build/Products/Release/*.h $out/include
+
+    # TODO: figure out how to get this to be right the first time around
+    install_name_tool -id $out/lib/libutil.dylib $out/lib/libutil.dylib
+  '';
+
+  meta = with stdenv.lib; {
+    maintainers = with maintainers; [ copumpkin ];
+    platforms   = platforms.darwin;
+    license     = licenses.apsl20;
+  };
+}