log a message when encountering empty package names rather than erroring

crates/turborepo-repository/src/package_graph/builder.rs

@@ -281,7 +281,18 @@ impl<'a, T: PackageDiscovery> BuildState<'a, ResolvedPackageManager, T> {
  }?;
 
  for (path, json) in package_jsons {
- self.add_json(path, json)?;
+ match self.add_json(path, json) {
+ Ok(()) => {}
+ Err(Error::PackageJsonMissingName(_)) => {
+ // previous implementations of turbo would silently ignore package.json files
+ // that didn't have a name field (well, actually, if two or more had the same
+ // name, it would throw a 'name clash' error, but that's a different story)
+ //
+ // let's try to match that behavior, but log a debug message
+ tracing::debug!("ignoring package.json at {} since it has no name", &path);
+ }
+ Err(err) => return Err(err),
+ }
  }
 
  let Self {