diff -r 4f468d35fa29 -r 32328a74c790 src/run.rs
--- a/src/run.rs	Thu Feb 26 11:38:43 2026 -0500
+++ b/src/run.rs	Fri Jan 16 19:39:22 2026 -0500
@@ -937,6 +937,7 @@
     Reg: SlidingRegTerm<Loc<N, F>, F>,
     P: ProxPenalty<Loc<N, F>, Dat::DerivativeDomain, Reg, F> + StepLengthBound<F, Dat>,
     Plot: Plotter<P::ReturnMapping, Dat::DerivativeDomain, RNDM<N, F>>,
+    for<'a> &'a Dat::DerivativeDomain: Instance<Dat::DerivativeDomain>,
 {
     let pt = P::prox_type();