• Simon Peyton Jones's avatar
    Remove Show instance for Forest · 4ecfc7ff
    Simon Peyton Jones authored
    A Forest is just a list, and we have a Show instance for
    lists already.  We don't need a special Show instance for
    Forests.  If we change our minds we can add a newtype,
    but I don't think it's worth it.
    Fixes Trac #5960