darwin.libdispatch: 442.1.4 -> 703.50.37

pkgs/os-specific/darwin/apple-source-releases/Libsystem/headers.txt

···
 os/trace.h
 os/tsd.h
 os_availability.modulemap
-os/voucher_activity_private.h
-os/voucher_private.h
 osfmk/UserNotification/KUNCUserNotifications.h
 osfmk/UserNotification/UNDReply.defs
 osfmk/UserNotification/UNDRequest.defs

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

···
       libpthread    = "218.60.3";
       hfs           = "366.70.1";
     };
+    "osx-10.12.4" = {
+      libdispatch = "703.50.37";
+    };
     "osx-10.11.6" = {
       PowerManagement = "572.50.1";
       dtrace        = "168";
···
       };
     };
     libclosure      = applePackage "libclosure"        "osx-10.11.6"     "sha256-L5rQ+UBpf3B+W1U+gZKk7fXulslHsc8lxnCsplV+nr0=" {};
-    libdispatch     = applePackage "libdispatch"       "osx-10.10.5"     "sha256-jfAEk0OLrJa9AIZVikIoHomd+l+4rCfc320Xh50qK5M=" {};
+    libdispatch     = applePackage "libdispatch"       "osx-10.12.4"     "sha256-xUqoG5JK4P3nXeoVUOBzodVK9fjH/I3xJ6WRtM39bdw=" {};
     Libinfo         = applePackage "Libinfo"           "osx-10.11.6"     "sha256-6F7wiwerv4nz/xXHtp1qCHSaFzZgzcRN+jbmXA5oWOQ=" {};
     Libm            = applePackage "Libm"              "osx-10.7.4"      "sha256-KjMETfT4qJm0m0Ux/F6Rq8bI4Q4UVnFx6IKbKxXd+Es=" {};
     Libnotify       = applePackage "Libnotify"         "osx-10.12.6"     "sha256-6wvMBxAUfiYcQtmlfYCj1d3kFmFM/jdboTd7hRvi3e4=" {};

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

···
-{ appleDerivation', stdenvNoCC }:
+{ lib, appleDerivation', stdenvNoCC }:
 
-appleDerivation' stdenvNoCC {
+appleDerivation' stdenvNoCC (finalAttrs: {
   dontConfigure = true;
   dontBuild = true;
   installPhase = ''
     mkdir -p $out/include/dispatch $out/include/os
 
     # Move these headers so CF can find <os/voucher_private.h>
-    mv private/voucher*.h  $out/include/os
     cp -r private/*.h  $out/include/dispatch
 
     cp -r dispatch/*.h $out/include/dispatch
···
 
     # gcc compatibility. Source: https://stackoverflow.com/a/28014302/3714556
     substituteInPlace $out/include/dispatch/object.h \
-      --replace 'typedef void (^dispatch_block_t)(void);' \
+      --replace-fail 'typedef void (^dispatch_block_t)(void);' \
                 '#ifdef __clang__
                  typedef void (^dispatch_block_t)(void);
                  #else
···
     dispatch/source.h
     dispatch/source_private.h
     dispatch/time.h
+  ''
+  + lib.optionalString (lib.versionAtLeast "1271.40.12" finalAttrs.version) ''
+    dispatch/time_private.h
+    dispatch/workloop.h
+    dispatch/workloop_private.h
+  ''
+  + ''
     os/object.h
     os/object_private.h
-    os/voucher_activity_private.h
-    os/voucher_private.h
   '';
-}
+})