diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 5088bd5a32a0..7681f1aa386d 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6666,6 +6666,9 @@ with pkgs;
 
   csmith = callPackage ../development/tools/misc/csmith {
     inherit (perlPackages) perl SysCPU;
+    # Workaround optional dependency on libbsd that's
+    # currently broken on Darwin.
+    libbsd = if stdenv.isDarwin then null else libbsd;
   };
 
   csslint = callPackage ../development/web/csslint { };