{
  package Base;
  use File::Spec::Functions;

  sub import {
    File::Spec::Functions->import;
  }
}

{
  package A;
  use Base;  # Now A doesn't have File::Spec::Functions!!!
}

##</code><code>##

{
  package Base;
  use File::Spec::Functions;
  use Import::Into;

  sub import {
    File::Spec::Functions->import::into( 1 );  # caller level 1
  }
}

{
  package A;
  use Base;  # Now A has File::Spec::Functions
}