don't build tokio-tun on non-linux targets

common/wireguard/Cargo.toml

@@ -27,4 +27,6 @@ nym-task = { path = "../task" }
 tap.workspace = true
 thiserror.workspace = true
 tokio = { workspace = true, features = ["rt-multi-thread", "net", "io-util"] }
+
+[target.'cfg(target_os = "linux")'.dependencies] 
 tokio-tun = "0.9.0"

common/wireguard/src/lib.rs

@@ -1,3 +1,5 @@
+#![cfg(target_os = "linux")]
+
 use std::{
     net::{Ipv4Addr, SocketAddr},
     sync::Arc,

gateway/Cargo.toml

@@ -62,6 +62,8 @@ nym-statistics-common = { path = "../common/statistics" }
 nym-task = { path = "../common/task" }
 nym-types = { path = "../common/types" }
 nym-validator-client = { path = "../common/client-libs/validator-client" }
+
+[target.'cfg(target_os = "linux")'.dependencies]
 nym-wireguard = { path = "../common/wireguard", optional = true }
 
 [build-dependencies]

gateway/src/node/mod.rs

@@ -370,11 +370,17 @@ impl<St> Gateway<St> {
         // Once this is a bit more mature, make this a commandline flag instead of a compile time
         // flag
         #[cfg(feature = "wireguard")]
-        if let Err(err) = nym_wireguard::start_wireguard(shutdown.subscribe()).await {
-            // that's a nasty workaround, but anyhow errors are generally nicer, especially on exit
-            bail!("{err}")
+        {
+            #[cfg(target_os = "linux")]
+            if let Err(err) = nym_wireguard::start_wireguard(shutdown.subscribe()).await {
+                // that's a nasty workaround, but anyhow errors are generally nicer, especially on exit
+                bail!("{err}")
+            }
+            #[cfg(not(target_os = "linux"))]
+            panic!("wireguard is not supported on this platform")
         }
 
+
         info!("Finished nym gateway startup procedure - it should now be able to receive mix and client traffic!");
 
         if let Err(err) = Self::wait_for_interrupt(shutdown).await {