diff --git a/corepkgs/buildenv.nix b/corepkgs/buildenv.nix
index 5bf7b4e56..02df088c0 100644
--- a/corepkgs/buildenv.nix
+++ b/corepkgs/buildenv.nix
@@ -23,5 +23,17 @@ derivation {
   # network traffic, so don't do that.
   preferLocalBuild = true;
 
+  __impureHostDeps = [
+    "/usr/lib/libSystem.dylib"
+    "/usr/lib/libSystem.B.dylib"
+    "/usr/lib/libobjc.A.dylib"
+    "/usr/lib/libobjc.dylib"
+    "/usr/lib/libauto.dylib"
+    "/usr/lib/libc++abi.dylib"
+    "/usr/lib/libc++.1.dylib"
+    "/usr/lib/libDiagnosticMessagesClient.dylib"
+    "/usr/lib/system"
+  ];
+
   inherit chrootDeps;
 }