Use crate root to choose relevant workspace for flycheck

Author: Wilfred

crates/project-model/src/project_json.rs

@@ -74,7 +74,7 @@ pub struct ProjectJson {
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub struct Crate {
     pub(crate) display_name: Option<CrateDisplayName>,
-    pub(crate) root_module: AbsPathBuf,
+    pub root_module: AbsPathBuf,
     pub(crate) edition: Edition,
     pub(crate) version: Option<String>,
     pub(crate) deps: Vec<Dependency>,

crates/rust-analyzer/src/handlers/notification.rs

@@ -296,10 +296,9 @@ fn run_flycheck(state: &mut GlobalState, vfs_path: VfsPath) -> bool {
                         })
                     }
                     project_model::ProjectWorkspace::Json { project, .. } => {
-                        if !project
-                            .crates()
-                            .any(|(c, _)| crate_ids.iter().any(|&crate_id| crate_id == c))
-                        {
+                        if !project.crates().any(|(_, krate)| {
+                            crate_root_paths.contains(&krate.root_module.as_path())
+                        }) {
                             return None;
                         }
                         None