darwin.libpthread: remove and replace with stubs

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

@@ -262,7 +262,6 @@ developerToolsPackages_11_3_1 // macosPackages_11_0_1 // {
     AvailabilityVersions = callPackage ./AvailabilityVersions/package.nix { };
     copyfile        = callPackage ./copyfile/package.nix { };
     Csu             = callPackage ./Csu/package.nix { };
-    libpthread      = applePackage "libpthread"        "osx-10.12.6"     "sha256-QvJ9PERmrCWBiDmOWrLvQUKZ4JxHuh8gS5nlZKDLqE8=" {};
     libresolv       = callPackage ./libresolv/package.nix { };
     libutil         = callPackage ./libutil/package.nix { };
     libunwind       = applePackage "libunwind"         "osx-10.12.6"     "sha256-CC0sndP/mKYe3dZu3v7fjuDASV4V4w7dAcnWMvpoquE=" {};

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

@@ -1,55 +0,0 @@
-{ lib, appleDerivation', stdenvNoCC, libdispatch, xnu }:
-
-appleDerivation' stdenvNoCC {
-  propagatedBuildInputs = [ libdispatch xnu ];
-
-  installPhase = ''
-    mkdir -p $out/include/pthread/
-    mkdir -p $out/include/sys/_types
-    cp pthread/*.h $out/include/pthread/
-
-    # This overwrites qos.h, and is probably not necessary, but I'll leave it here for now
-    # cp private/*.h $out/include/pthread/
-
-    cp -r sys $out/include
-    cp -r sys/_pthread/*.h $out/include/sys/_types/
-  '';
-
-  appleHeaders = ''
-    pthread/introspection.h
-    pthread/pthread.h
-    pthread/pthread_impl.h
-    pthread/pthread_spis.h
-    pthread/qos.h
-    pthread/sched.h
-    pthread/spawn.h
-    sys/_pthread/_pthread_attr_t.h
-    sys/_pthread/_pthread_cond_t.h
-    sys/_pthread/_pthread_condattr_t.h
-    sys/_pthread/_pthread_key_t.h
-    sys/_pthread/_pthread_mutex_t.h
-    sys/_pthread/_pthread_mutexattr_t.h
-    sys/_pthread/_pthread_once_t.h
-    sys/_pthread/_pthread_rwlock_t.h
-    sys/_pthread/_pthread_rwlockattr_t.h
-    sys/_pthread/_pthread_t.h
-    sys/_pthread/_pthread_types.h
-    sys/_types/_pthread_attr_t.h
-    sys/_types/_pthread_cond_t.h
-    sys/_types/_pthread_condattr_t.h
-    sys/_types/_pthread_key_t.h
-    sys/_types/_pthread_mutex_t.h
-    sys/_types/_pthread_mutexattr_t.h
-    sys/_types/_pthread_once_t.h
-    sys/_types/_pthread_rwlock_t.h
-    sys/_types/_pthread_rwlockattr_t.h
-    sys/_types/_pthread_t.h
-    sys/_types/_pthread_types.h
-    sys/qos.h
-    sys/qos_private.h
-  '';
-
-  meta = {
-    platforms = lib.platforms.darwin;
-  };
-}

pkgs/os-specific/darwin/apple-source-releases/macos-11.0.1.nix

@@ -12,7 +12,6 @@ bootstrap_cmds = callPackage ./bootstrap_cmds/package.nix { };
 copyfile = applePackage' "copyfile" "173.40.2" "macos-11.0.1" "1j20909inn2iw8n51b8vk551wznfi3bhfziy8nbv08qj5lk50m04" {};
 diskdev_cmds = applePackage' "diskdev_cmds" "667.40.1" "macos-11.0.1" "0wr60vyvgkbc4wyldnsqas0xss2k1fgmbdk3vnhj6v6jqa98l1ny" {};
 file_cmds = applePackage' "file_cmds" "321.40.3" "macos-11.0.1" "0p077lnbcy8266m03a0fssj4214bjxh88y3qkspnzcvi0g84k43q" {};
-libpthread = applePackage' "libpthread" "454.40.3" "macos-11.0.1" "0zljbw8mpb80n1if65hhi9lkgwbgjr8vc9wvf7q1nl3mzyl35f8p" {};
 libresolv = applePackage' "libresolv" "68" "macos-11.0.1" "045ahh8nvaam9whryc2f5g5xagwp7d187r80kcff82snp5p66aq1" {};
 libunwind = applePackage' "libunwind" "200.10" "macos-11.0.1" "0wa4ssr7skn5j0ncm1rigd56qmbs982zvwr3qpjn28krwp8wvigd" {};
 libutil = applePackage' "libutil" "58.40.2" "macos-11.0.1" "11s0vizk7bg0k0yjx21j8vaji4j4vk57131qbp07i9lpksb3bcy4" {};

pkgs/top-level/darwin-packages.nix

@@ -95,6 +95,7 @@ makeScopeWithSplicing' {
     "libdispatch"
     "libmalloc"
     "libplatform"
+    "libpthread"
   ] (mkStub apple_sdk.version);
 in
 impure-cmds // appleSourcePackages // stubs // {