(* SystemFC rules *)
| RVar : ∀ Γ Δ σ l, Rule [ ] [Γ>Δ> [σ@@l] |- [σ @@l]]
-| RGlobal : ∀ Γ Δ τ l, WeakExprVar -> Rule [ ] [Γ>Δ> [] |- [τ @@l]]
+| RGlobal : forall Γ Δ l (g:Global Γ) v, Rule [ ] [Γ>Δ> [] |- [g v @@l]]
| RLam : forall Γ Δ Σ (tx:HaskType Γ ★) te l, Rule [Γ>Δ> Σ,,[tx@@l]|- [te@@l] ] [Γ>Δ> Σ |- [tx--->te @@l]]
| RCast : forall Γ Δ Σ (σ₁ σ₂:HaskType Γ ★) l,
HaskCoercion Γ Δ (σ₁∼∼∼σ₂) -> Rule [Γ>Δ> Σ |- [σ₁@@l] ] [Γ>Δ> Σ |- [σ₂ @@l]]