Compilation failure

Maybe due to the new xml-conduit?
Building library for xml-conduit-writer-0.1.1.1..
[1 of 1] Compiling Text.XML.Writer  ( src/Text/XML/Writer.hs, dist/build/Text/XML/Writer.o )

src/Text/XML/Writer.hs:56:65: error:
    • No instance for (data-default-class-0.1.2.0:Data.Default.Class.Default
                         (M.Map Name Text))
        arising from a use of ‘def’
    • In the second argument of ‘Element’, namely ‘def’
      In the ‘documentRoot’ field of a record
      In the expression:
        Document
          {documentPrologue = Prologue def def def,
           documentRoot = Element name def (render children),
           documentEpilogue = def}
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