From 5994b49412c058079639585501a78e6458fdbb6f Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Fri, 6 Nov 2026 19:54:09 +0100
Subject: HyParView (slim)

---
 src/simtest/mod.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/simtest/mod.rs')

diff --git a/src/simtest/mod.rs b/src/simtest/mod.rs
index c3b2368..dadc3e8 100644
--- a/src/simtest/mod.rs
+++ b/src/simtest/mod.rs
@@ -11,6 +11,7 @@
 
 mod bench;
 mod deltas;
+mod hyparview;
 mod identity;
 mod links;
 mod reach;
@@ -193,9 +194,18 @@ impl Sim {
             clock_skew_warn: Duration::from_secs(2),
             stream_heartbeat: Duration::from_secs(30),
             superseded_writes: Default::default(),
+            // `SIM_TOPOLOGY=hyparview`: every simulated node chooses its neighbours so.
+            topology: match std::env::var("SIM_TOPOLOGY").as_deref() {
+                Ok("hyparview") => crate::swarm::topology::Kind::Hyparview,
+                _ => Default::default(),
+            },
             // `SIM_DISSEMINATION=plumtree`: every simulated node passes changes on so.
+            // Unset with `SIM_TOPOLOGY=hyparview`: PlumTree, as `--dissemination` is then.
             dissemination: match std::env::var("SIM_DISSEMINATION").as_deref() {
                 Ok("plumtree") => crate::swarm::dissemination::Kind::Plumtree,
+                Err(_) if std::env::var("SIM_TOPOLOGY").as_deref() == Ok("hyparview") => {
+                    crate::swarm::dissemination::Kind::Plumtree
+                }
                 _ => Default::default(),
             },
             blob_chunk_bytes: 64 * 1024,
-- 
cgit v1.3.1