From 055efc604d8cf56b2cdd05bbd863acb9c2ea12d6 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Fri, 30 Oct 2026 15:55:21 +0100
Subject: make mycelium optional

---
 src/transport/mod.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

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

diff --git a/src/transport/mod.rs b/src/transport/mod.rs
index 9d43e5a..d8c6e2b 100644
--- a/src/transport/mod.rs
+++ b/src/transport/mod.rs
@@ -18,6 +18,7 @@ pub(crate) mod firewall;
 pub(crate) mod identity;
 #[cfg(feature = "libp2p")]
 pub(crate) mod libp2p;
+#[cfg(feature = "mycelium")]
 pub(crate) mod mycelium;
 pub(crate) mod paths;
 #[cfg(test)]
@@ -28,6 +29,11 @@ pub(crate) mod tor;
 pub(crate) mod traffic;
 pub(crate) mod wire;
 
+#[cfg(not(any(feature = "mycelium", feature = "libp2p", feature = "tor")))]
+compile_error!(
+    "continuum needs a transport: build with at least one of the mycelium, libp2p and tor features, e.g. `cargo build --features mycelium`"
+);
+
 /// Starts the transport `name` (one of `config::TRANSPORTS`) as `settings` configure
 /// it: its scheme and the transport, or None if `stop` came first (some take a while to
 /// start: a supervised Mycelium daemon, arti). `key`: the node key, which some prove
@@ -39,8 +45,9 @@ pub(crate) async fn start(
     stop: tokio::sync::watch::Receiver<bool>,
 ) -> Result<Option<(&'static str, std::sync::Arc<dyn Transport>)>> {
     use std::sync::Arc;
-    let _ = key;
+    let _ = (key, &stop);
     let started: Option<(&'static str, Arc<dyn Transport>)> = match name {
+        #[cfg(feature = "mycelium")]
         "mycelium" => mycelium::start(settings, stop)
             .await?
             .map(|transport| (mycelium::SCHEME, Arc::new(transport) as Arc<dyn Transport>)),
-- 
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