\version "2.19.20"

\score {
  <<
    \new Voice {
      <<
        { d''1
          %-\tweak outside-staff-priority #0
          (
        }
        { s2 s
          -\tweak style #'none
          -\tweak avoid-slur #'inside
          -\tweak outside-staff-priority ##f
          -\tweak DynamicLineSpanner.outside-staff-priority ##f
          ^\dim
        }
      >>
      es''4)\!
    }
    \new Voice {
      8 8 8 8 8 8 8 8
      4
    }
  >>
}