{⟦
  org ↦ ⟦
    eolang ↦ ⟦
      error(message) ↦ ⟦
        λ ⤍ Lorg_eolang_error
      ⟧,
      λ ⤍ Package
    ⟧,
    λ ⤍ Package
  ⟧
⟧}