lilypond-common-includes/enable_custom_chord_settings.ly

generalLayout = \layout {
  \generalLayout
  \context {
    \ChordNames
    chordNameExceptions = #(sequential-music-to-chord-exceptions customChordPrintings #t)
  }
}

verseChordLayout = \layout {
  \verseChordLayout
  \context {
    \ChordNames
    chordNameExceptions = #(sequential-music-to-chord-exceptions customChordPrintings #t)
  }
}