lex_hello worked for a second just now

this is just a backup however

orchid-base/src/builtin.rs

@@ -1,9 +1,13 @@
 use std::ops::Deref;
+use std::rc::Rc;
 
 use futures::future::LocalBoxFuture;
 
 use crate::api;
 
+pub type Spawner = Rc<dyn Fn(LocalBoxFuture<'static, ()>)>;
+pub type RecvCB<'a> = Box<dyn for<'b> FnOnce(&'b [u8]) -> LocalBoxFuture<'b, ()> + 'a>;
+
 /// The 3 primary contact points with an extension are
 /// - send a message
 /// - wait for a message to arrive
@@ -12,10 +16,7 @@ use crate::api;
 /// There are no ordering guarantees about these
 pub trait ExtPort {
 	fn send<'a>(&'a self, msg: &'a [u8]) -> LocalBoxFuture<'a, ()>;
-	fn recv<'a>(
-		&'a self,
-		cb: Box<dyn FnOnce(&[u8]) -> LocalBoxFuture<'_, ()> + 'a>,
-	) -> LocalBoxFuture<'a, ()>;
+	fn recv<'a>(&'a self, cb: RecvCB<'a>) -> LocalBoxFuture<'a, ()>;
 }
 
 pub struct ExtInit {
@@ -24,12 +25,7 @@ pub struct ExtInit {
 }
 impl ExtInit {
 	pub async fn send(&self, msg: &[u8]) { self.port.send(msg).await }
-	pub async fn recv<'a, 's: 'a>(
-		&'s self,
-		cb: Box<dyn FnOnce(&[u8]) -> LocalBoxFuture<'_, ()> + 'a>,
-	) {
-		self.port.recv(Box::new(cb)).await
-	}
+	pub async fn recv<'a, 's: 'a>(&'s self, cb: RecvCB<'a>) { self.port.recv(Box::new(cb)).await }
 }
 impl Deref for ExtInit {
 	type Target = api::ExtensionHeader;