Suppress related warnings, fix nanoid, and get the build green (#7579)

This is in preparation for adding a Linux build step to our CI.

Release Notes:

- N/A

crates/zed/src/languages/purescript.rs

@@ -26,6 +26,8 @@ pub struct PurescriptLspAdapter {
 }
 
 impl PurescriptLspAdapter {
+    // todo!(linux): remove
+    #[cfg_attr(target_os = "linux", allow(dead_code))]
     pub fn new(node: Arc<dyn NodeRuntime>) -> Self {
         Self { node }
     }