{⟦
  org ↦ ⟦
    eolang ↦ ⟦
      rust(code, portal, params) ↦ ⟦
        λ ⤍ Lorg_eolang_rust
      ⟧,
      λ ⤍ Package
    ⟧,
    λ ⤍ Package
  ⟧
⟧}