diff --git a/pkgs/os-specific/darwin/apple-source-releases/default.nix b/pkgs/os-specific/darwin/apple-source-releases/default.nix
index 7539639ddbf8..ad5a308bcf16 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/default.nix
+++ b/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 { };
-    libclosure      = applePackage "libclosure"        "osx-10.11.6"     "sha256-L5rQ+UBpf3B+W1U+gZKk7fXulslHsc8lxnCsplV+nr0=" {};
     libdispatch     = applePackage "libdispatch"       "osx-10.12.4"     "sha256-xUqoG5JK4P3nXeoVUOBzodVK9fjH/I3xJ6WRtM39bdw=" {};
     libmalloc       = if isSdk10_12 then
       applePackage "libmalloc" "osx-10.12.6" "sha256-brfG4GEF2yZipKdhlPq6DhT2z5hKYSb2MAmffaikdO4=" {}
diff --git a/pkgs/os-specific/darwin/apple-source-releases/libclosure/default.nix b/pkgs/os-specific/darwin/apple-source-releases/libclosure/default.nix
deleted file mode 100644
index 976658b7e5dd..000000000000
--- a/pkgs/os-specific/darwin/apple-source-releases/libclosure/default.nix
+++ /dev/null
@@ -1,13 +0,0 @@
-{ appleDerivation', stdenvNoCC }:
-
-appleDerivation' stdenvNoCC {
-  installPhase = ''
-    mkdir -p $out/include
-    cp *.h $out/include/
-  '';
-
-  appleHeaders = ''
-    Block.h
-    Block_private.h
-  '';
-}
diff --git a/pkgs/os-specific/darwin/apple-source-releases/macos-11.0.1.nix b/pkgs/os-specific/darwin/apple-source-releases/macos-11.0.1.nix
index 65134f675495..49a1b1f4ef29 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/macos-11.0.1.nix
+++ b/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" {};
-libclosure = applePackage' "libclosure" "78" "macos-11.0.1" "0vf9n0k3m8dbprv1bf45zqg0g43bidy2i5z1v9a826bsf8lv7am7" {};
 libdispatch = applePackage' "libdispatch" "1271.40.12" "macos-11.0.1" "1ck5srcjapg18vqb8wl08gacs7ndc6xr067qjn3ngx39q1jdcywz" {};
 libmalloc = applePackage' "libmalloc" "317.40.8" "macos-11.0.1" "sha256-Tdhb0mq3w4Hwvp3xHB79Vr22hCOQK6h28HCsd7jvITI=" {};
 libplatform = applePackage' "libplatform" "254.40.4" "macos-11.0.1" "1qf3ri0yd8b1xjln1j1gyx7ks6k3a2jhd63blyvfby75y9s7flky" {};
diff --git a/pkgs/top-level/darwin-packages.nix b/pkgs/top-level/darwin-packages.nix
index e414410245d7..7f0735e8a9e4 100644
--- a/pkgs/top-level/darwin-packages.nix
+++ b/pkgs/top-level/darwin-packages.nix
@@ -91,6 +91,7 @@ makeScopeWithSplicing' {
     "hfs"
     "hfsHeaders"
     "launchd"
+    "libclosure"
   ] (mkStub apple_sdk.version);
 in
 impure-cmds // appleSourcePackages // stubs // {