qemu: fixup systemWrapper

NixOS · Apr 20, 2017 · e3a7d6e · e3a7d6e
1 parent 7042463
commit e3a7d6e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pkgs/applications/virtualization/qemu/default.nix b/pkgs/applications/virtualization/qemu/default.nix
@@ -173,7 +173,7 @@ stdenv.mkDerivation rec {
         "aarch64-linux" = "aarch64";
        "default" = "i386";
       };
-    in if (systemWrapperOpts ? stdenv.system)
+    in if (builtins.hasAttr stdenv.system systemWrapperOpts)
                   then (builtins.getAttr stdenv.system systemWrapperOpts)
                   else systemWrapperOpts.default;