anchor.diff:      ninja
       pkgconfig
       makeWrapper
  +    which # for locale detection
       libxml2 # for xml-stripblanks
     ];
   
  
positive.code:   doCheck = true;
  
    postPatch = ''
      substituteInPlace installed-tests/debugger-test.sh --subst-var-by gjsConsole $out/bin/gjs-console
    '';
  
  
negative.code: , dbus
  , gdk-pixbuf
  , makeWrapper
  , which
  , xvfb_run
  , nixosTests
  }:
  