intuition.
eapply (distro_iso_eq (fun b => b)(fun b => b)); intuition.
eapply getSupport_In_evalDist.
intuition.
eapply getSupport_In_evalDist.
eauto.
rewrite H.
trivial.
eapply H0.
eapply getSupport_In_evalDist.
intuition.
eapply getSupport_In_evalDist.
eauto.
rewrite <- H.
trivial.
Qed.

Theorem distro_irr_eq : forall (A B : Set)(b : Comp B)(a : B -> Comp A)(y : A) v,
well_formed_comp b ->
(forall x, In x (getSupport b) -> (evalDist (a x) y) == v) ->
evalDist (Bind b a) y == v.