}

  subgraph thirdLine {
    {rank=same sourceFiles compileVariantCpp outputDirectory}
    includeRoot -> compileVariantCpp
    sourceFiles -> compileVariantCpp
    compileVariantCpp -> outputDirectory

    sourceFiles[style="rounded,filled", fillcolor="#bfffbf", label="Source files"]
    compileVariantCpp[label=<compile<i>Variant</i>Cpp>]

  edge [fontname = "Sans"];
  node [shape=rectangle, fixedsize=true, width=2.5, height=0.5];
  node [style="dashed,filled", fillcolor=grey]
  rankdir=LR

  compileVariantCpp -> linkVariant -> installVariant -> assembleVariant [dir=back, style=dashed]
  compileVariantCpp[label=<compile<i>Variant</i>Cpp>]
  linkVariant[label=<link<i>Variant</i>>]
  installVariant[label=<install<i>Variant</i>>]
  assembleVariant[label=<assemble<i>Variant</i>>]

  edge [fontname = "Sans"];
  node [shape=rectangle, fixedsize=true, width=2.5, height=0.5];
  node [style="dashed,filled", fillcolor=grey]
  rankdir=LR

  compileVariantCpp -> {linkVariant, createVariant} -> assembleVariant [dir=back, style=dashed]
  compileVariantCpp[label=<compile<i>Variant</i>Cpp>]
  linkVariant[label=<link<i>Variant</i>>]
  createVariant[label=<create<i>Variant</i>>]
  assembleVariant[label=<assemble<i>Variant</i>>]