anchor.diff:      python3
       zlib
     ] ++ lib.optionals enableJavaScript [
  -    jsRuntime
  +    (if stdenv.hostPlatform.isDarwin then JavaScriptCore else spidermonkey_78)
     ] ++ (if stdenv.hostPlatform.isDarwin then [
       SystemConfiguration
       CoreFoundation
  
positive.code: , zlib
  , dbus
  , networkmanager
  , enableJavaScript ? stdenv.isDarwin || lib.meta.availableOn stdenv.hostPlatform spidermonkey_68
  , spidermonkey_68
  , pcre
  , gsettings-desktop-schemas
  , glib
  
negative.code: , JavaScriptCore
  }:
  
  stdenv.mkDerivation rec {
    pname = "libproxy";
    version = "0.4.17";
  
  