darwin.mDNSResponder: remove and replace with stubs

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

@@ -264,7 +264,6 @@ developerToolsPackages_11_3_1 // macosPackages_11_0_1 // {
     Csu             = callPackage ./Csu/package.nix { };
     libresolv       = callPackage ./libresolv/package.nix { };
     libutil         = callPackage ./libutil/package.nix { };
-    mDNSResponder   = applePackage "mDNSResponder"     "osx-10.12.6"     "sha256-ddZr6tropkpdMJhq/kUlm3OwO8b0yxtkrMpwec8R4FY=" {};
     objc4           = applePackage "objc4"             "osx-10.12.6"     "sha256-ZsxRpdsfv3Dxs7yBBCkjbKXKR6aXwkEpxc1XYXz7ueM=" {};
     ppp             = applePackage "ppp"               "osx-10.12.6"     "sha256-M1zoEjjeKIDUEP6ACbpUJk3OXjobw4g/qzUmxGdX1J0=" {};
     removefile      = callPackage ./removefile/package.nix { };

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

@@ -1,12 +0,0 @@
-{ appleDerivation', stdenvNoCC }:
-
-appleDerivation' stdenvNoCC {
-  dontBuild = true;
-  installPhase = ''
-    mkdir -p $out/include
-    # TODO: Do this only for 765.50.9 once there is a way to apply version-specific
-    # logic in a source-release derivation.
-    substitute mDNSShared/dns_sd.h $out/include/dns_sd.h \
-      --replace '#define _DNS_SD_LIBDISPATCH 0' '#define _DNS_SD_LIBDISPATCH 1'
-  '';
-}

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

@@ -14,7 +14,6 @@ diskdev_cmds = applePackage' "diskdev_cmds" "667.40.1" "macos-11.0.1" "0wr60vyvg
 file_cmds = applePackage' "file_cmds" "321.40.3" "macos-11.0.1" "0p077lnbcy8266m03a0fssj4214bjxh88y3qkspnzcvi0g84k43q" {};
 libresolv = applePackage' "libresolv" "68" "macos-11.0.1" "045ahh8nvaam9whryc2f5g5xagwp7d187r80kcff82snp5p66aq1" {};
 libutil = applePackage' "libutil" "58.40.2" "macos-11.0.1" "11s0vizk7bg0k0yjx21j8vaji4j4vk57131qbp07i9lpksb3bcy4" {};
-mDNSResponder = applePackage' "mDNSResponder" "1310.40.42" "macos-11.0.1" "0xxrqqbqsf0pagfs1yzwfbwf7lhr0sns97k18y7kh4ri0p09h44c" {};
 network_cmds = applePackage' "network_cmds" "606.40.2" "macos-11.0.1" "1jsy13nraarafq6wmgh3wyir8wrwfra148xsjns7cw7q5xn40a1w" {};
 objc4 = applePackage' "objc4" "818.2" "macos-11.0.1" "0m8mk1qd18wqjfn2jsq2lx6fxvllhmadmvz11jzg8vjw8pq91nw2" {};
 ppp = applePackage' "ppp" "877.40.2" "macos-11.0.1" "06xznc77j45zzi12m4cmr3jj853qlc8dbmynbg1z6m9qf5phdbgk" {};

pkgs/top-level/darwin-packages.nix

@@ -96,6 +96,7 @@ makeScopeWithSplicing' {
     "libmalloc"
     "libplatform"
     "libpthread"
+    "mDNSResponder"
   ] (mkStub apple_sdk.version);
 in
 impure-cmds // appleSourcePackages // stubs // {