diff --git a/pkgs/os-specific/darwin/apple-source-releases/Libsystem/default.nix b/pkgs/os-specific/darwin/apple-source-releases/Libsystem/default.nix
index c9cc99a6550e..cea921488c0f 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/Libsystem/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libsystem/default.nix
@@ -10,24 +10,13 @@
 let
   darling.src = fetchzip {
     url = "https://github.com/darlinghq/darling/archive/d2cc5fa748003aaa70ad4180fff0a9a85dc65e9b.tar.gz";
-    sha256 = "11b51fw47nl505h63bgx5kqiyhf3glhp1q6jkpb6nqfislnzzkrf";
+    hash = "sha256-/YynrKJdi26Xj4lvp5wsN+TAhZjonOrNNHuk4L5tC7s=";
     postFetch = ''
-      # The archive contains both `src/opendirectory` and `src/OpenDirectory`,
-      # pre-create the directory to choose the canonical case on
-      # case-insensitive filesystems.
-      mkdir -p $out/src/OpenDirectory
-
-      cd $out
-      tar -xzf $downloadedFile --strip-components=1
-      rm -r $out/src/libm
-
-      # If `src/opendirectory` and `src/OpenDirectory` refer to different
-      # things, then combine them into `src/OpenDirectory` to match the result
-      # on case-insensitive filesystems.
-      if [ "$(stat -c %i src/opendirectory)" != "$(stat -c %i src/OpenDirectory)" ]; then
-        mv src/opendirectory/* src/OpenDirectory/
-        rmdir src/opendirectory
-      fi
+      # The archive contains both `src/opendirectory` and `src/OpenDirectory`.
+      # Since neither directory is used for anything, we just remove them to avoid
+      #  the potential issue where file systems with different case sensitivity produce
+      #  different hashes.
+      rm -rf $out/src/{OpenDirectory,opendirectory}
     '';
   };