fix: Various for MacOS (ai-dynamo#155)

- Mac doesn't have `pipe2` syscall so use plain `pipe`.
- rtnetlink isn't a dependency on mac so don't use the type

Author: grahamking

Cargo.toml

@@ -62,4 +62,7 @@ validator = { version = "0.20.0", features = ["derive"] }
 uuid = { version = "1", features = ["v4", "serde"] }
 xxhash-rust = { version = "0.8", features = ["xxh3", "const_xxh3"] }
 strum = { version = "0.27", features = ["derive"] }
-prometheus = { version = "0.13" }
+prometheus = { version = "0.13" }
+
+[profile.dev.package]
+insta.opt-level = 3

launch/dynamo-run/src/net.rs

@@ -39,6 +39,7 @@ impl LinkDataError {
         Self { kind, interface }
     }
 
+    #[cfg(target_os = "linux")]
     fn communication(communication_error: rtnetlink::Error) -> Self {
         let kind = LinkDataErrorKind::Communication(communication_error);
         let interface = None;
@@ -61,6 +62,7 @@ impl std::error::Error for LinkDataError {
     fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
         match self.kind {
             LinkDataErrorKind::Connection(ref e) => Some(e),
+            #[cfg(target_os = "linux")]
             LinkDataErrorKind::Communication(ref e) => Some(e),
         }
     }
@@ -69,6 +71,7 @@ impl std::error::Error for LinkDataError {
 #[derive(Debug)]
 pub enum LinkDataErrorKind {
     Connection(std::io::Error),
+    #[cfg(target_os = "linux")]
     Communication(rtnetlink::Error),
 }
 

lib/llm/Cargo.toml

@@ -160,6 +160,3 @@ insta = { version = "1.41", features = [
 [build-dependencies]
 bindgen = "0.70"
 cmake = "0.1"
-
-[profile.dev.package]
-insta.opt-level = 3

lib/llm/src/engines/sglang/worker.rs

@@ -447,7 +447,8 @@ async fn start_sglang(
     // This pipe is how sglang tells us it's ready
     let mut pipe_fds: [libc::c_int; 2] = [-1, -1];
     unsafe {
-        let err = libc::pipe2(pipe_fds.as_mut_ptr() as *mut c_int, 0); // libc::O_NONBLOCK);
+        // Seems to be OK without libc::O_NONBLOCK
+        let err = libc::pipe(pipe_fds.as_mut_ptr() as *mut c_int);
         if err != 0 {
             anyhow::bail!("libc::pipe error {err}");
         }