1 files changed, 2 insertions, 4 deletions
diff --git a/nixpkgs/pkgs/development/compilers/llvm/9/libunwind.nix b/nixpkgs/pkgs/development/compilers/llvm/9/libunwind.nix
index 98df98838f13..4c4c85512e3d 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/9/libunwind.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/9/libunwind.nix
@@ -1,4 +1,4 @@
-{ stdenv, version, fetch, cmake, fetchpatch
+{ lib, stdenv, version, fetch, cmake, fetchpatch
 , enableShared ? !stdenv.hostPlatform.isStatic
 }:
 
@@ -10,7 +10,5 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  enableParallelBuilding = true;
-
-  cmakeFlags = stdenv.lib.optional (!enableShared) "-DLIBUNWIND_ENABLE_SHARED=OFF";
+  cmakeFlags = lib.optional (!enableShared) "-DLIBUNWIND_ENABLE_SHARED=OFF";
 }