Auto merge of rust-lang#16616 - Veykril:build-script-fix, r=Veykril

fix: server hanging up on build script task

This should fix rust-lang/rust-analyzer#16614, can't say for certain since it might be not 100% reproducible... We really need to replace the current workspace fetching logic, it is completely unreadable and incredibly difficult to follow. I don't really understand how the server even got to hang here honestly (I would expect it to loop re-fetching build scripts, but not hang).

Author: bors

crates/rust-analyzer/src/global_state.rs

@@ -301,19 +301,12 @@ impl GlobalState {
                 if let Some(path) = vfs_path.as_path() {
                     let path = path.to_path_buf();
                     if reload::should_refresh_for_change(&path, file.kind()) {
-                        workspace_structure_change = Some((
-                            path.clone(),
-                            false,
-                            AsRef::<std::path::Path>::as_ref(&path).ends_with("build.rs"),
-                        ));
+                        workspace_structure_change = Some((path.clone(), false));
                     }
                     if file.is_created_or_deleted() {
                         has_structure_changes = true;
-                        workspace_structure_change = Some((
-                            path,
-                            self.crate_graph_file_dependencies.contains(vfs_path),
-                            false,
-                        ));
+                        workspace_structure_change =
+                            Some((path, self.crate_graph_file_dependencies.contains(vfs_path)));
                     } else if path.extension() == Some("rs".as_ref()) {
                         modified_rust_files.push(file.file_id);
                     }
@@ -365,16 +358,11 @@ impl GlobalState {
             // FIXME: ideally we should only trigger a workspace fetch for non-library changes
             // but something's going wrong with the source root business when we add a new local
             // crate see https://github.com/rust-lang/rust-analyzer/issues/13029
-            if let Some((path, force_crate_graph_reload, build_scripts_touched)) =
-                workspace_structure_change
-            {
+            if let Some((path, force_crate_graph_reload)) = workspace_structure_change {
                 self.fetch_workspaces_queue.request_op(
                     format!("workspace vfs file change: {path}"),
                     force_crate_graph_reload,
                 );
-                if build_scripts_touched {
-                    self.fetch_build_data_queue.request_op(format!("build.rs changed: {path}"), ());
-                }
             }
         }
 

crates/rust-analyzer/src/lsp/utils.rs

@@ -134,6 +134,7 @@ impl GlobalState {
         let token = lsp_types::ProgressToken::String(
             cancel_token.unwrap_or_else(|| format!("rustAnalyzer/{title}")),
         );
+        tracing::debug!(?token, ?state, "report_progress {message:?}");
         let work_done_progress = match state {
             Progress::Begin => {
                 self.send_request::<lsp_types::request::WorkDoneProgressCreate>(

crates/rust-analyzer/src/reload.rs

@@ -411,10 +411,7 @@ impl GlobalState {
                 if *force_reload_crate_graph {
                     self.recreate_crate_graph(cause);
                 }
-                if self.build_deps_changed && self.config.run_build_scripts() {
-                    self.build_deps_changed = false;
-                    self.fetch_build_data_queue.request_op("build_deps_changed".to_owned(), ());
-                }
+
                 // Current build scripts do not match the version of the active
                 // workspace, so there's nothing for us to update.
                 return;
@@ -424,7 +421,7 @@ impl GlobalState {
 
             // Here, we completely changed the workspace (Cargo.toml edit), so
             // we don't care about build-script results, they are stale.
-            // FIXME: can we abort the build scripts here?
+            // FIXME: can we abort the build scripts here if they are already running?
             self.workspaces = Arc::new(workspaces);
 
             if self.config.run_build_scripts() {