10 files changed, 61 insertions, 12 deletions

diff --git a/crates/project_model/src/workspace.rs b/crates/project_model/src/workspace.rs
index ea0c9ff60..d754c8b55 100644
--- a/crates/project_model/src/workspace.rs
+++ b/crates/project_model/src/workspace.rs
@@ -56,6 +56,7 @@ impl fmt::Debug for ProjectWorkspace {
         match self {
             ProjectWorkspace::Cargo { cargo, sysroot, rustc, rustc_cfg } => f
                 .debug_struct("Cargo")
+                .field("root", &cargo.workspace_root())
                 .field("n_packages", &cargo.packages().len())
                 .field("n_sysroot_crates", &sysroot.crates().len())
                 .field(
@@ -273,12 +274,19 @@ impl ProjectWorkspace {
         crate_graph
     }
 
-    pub fn collect_build_data_configs(&self, collector: &mut BuildDataCollector) {
+    pub fn collect_build_data_configs(
+        &self,
+        collector: &mut BuildDataCollector,
+        for_private: bool,
+    ) {
         match self {
             ProjectWorkspace::Cargo { cargo, rustc, .. } => {
                 collector.add_config(&cargo.workspace_root(), cargo.build_data_config().clone());
-                if let Some(rustc) = rustc {
-                    collector.add_config(rustc.workspace_root(), rustc.build_data_config().clone());
+                if for_private {
+                    if let Some(rustc) = rustc {
+                        collector
+                            .add_config(rustc.workspace_root(), rustc.build_data_config().clone());
+                    }
                 }
             }
             _ => {}
diff --git a/crates/rust-analyzer/src/cli/analysis_bench.rs b/crates/rust-analyzer/src/cli/analysis_bench.rs
index 3bd7e678d..104f2e8a2 100644
--- a/crates/rust-analyzer/src/cli/analysis_bench.rs
+++ b/crates/rust-analyzer/src/cli/analysis_bench.rs
@@ -68,6 +68,9 @@ impl BenchCmd {
         let load_cargo_config = LoadCargoConfig {
             load_out_dirs_from_check: self.load_output_dirs,
             with_proc_macro: self.with_proc_macro,
+            // This will currently never have rustcSource set, however if in
+            // future it does this will handle that case
+            run_rustc_build_scripts: true,
         };
         let (mut host, vfs, _proc_macro) =
             load_workspace_at(&self.path, &cargo_config, &load_cargo_config, &|_| {})?;
diff --git a/crates/rust-analyzer/src/cli/analysis_stats.rs b/crates/rust-analyzer/src/cli/analysis_stats.rs
index ad0759bda..5a8432960 100644
--- a/crates/rust-analyzer/src/cli/analysis_stats.rs
+++ b/crates/rust-analyzer/src/cli/analysis_stats.rs
@@ -63,6 +63,9 @@ impl AnalysisStatsCmd {
         let load_cargo_config = LoadCargoConfig {
             load_out_dirs_from_check: self.load_output_dirs,
             with_proc_macro: self.with_proc_macro,
+            // This will currently never have rustcSource set, however if in
+            // future it does this will handle that case
+            run_rustc_build_scripts: true,
         };
         let (host, vfs, _proc_macro) =
             load_workspace_at(&self.path, &cargo_config, &load_cargo_config, &|_| {})?;
diff --git a/crates/rust-analyzer/src/cli/diagnostics.rs b/crates/rust-analyzer/src/cli/diagnostics.rs
index 8b985716b..e1966b5a7 100644
--- a/crates/rust-analyzer/src/cli/diagnostics.rs
+++ b/crates/rust-analyzer/src/cli/diagnostics.rs
@@ -34,7 +34,13 @@ pub fn diagnostics(
     with_proc_macro: bool,
 ) -> Result<()> {
     let cargo_config = Default::default();
-    let load_cargo_config = LoadCargoConfig { load_out_dirs_from_check, with_proc_macro };
+    let load_cargo_config = LoadCargoConfig {
+        load_out_dirs_from_check,
+        with_proc_macro,
+        // This will currently never have rustcSource set, however if in
+        // future it does this will handle that case
+        run_rustc_build_scripts: true,
+    };
     let (host, _vfs, _proc_macro) =
         load_workspace_at(path, &cargo_config, &load_cargo_config, &|_| {})?;
     let db = host.raw_database();
diff --git a/crates/rust-analyzer/src/cli/load_cargo.rs b/crates/rust-analyzer/src/cli/load_cargo.rs
index 310c36904..3d7b5031a 100644
--- a/crates/rust-analyzer/src/cli/load_cargo.rs
+++ b/crates/rust-analyzer/src/cli/load_cargo.rs
@@ -14,6 +14,7 @@ use vfs::{loader::Handle, AbsPath, AbsPathBuf};
 use crate::reload::{ProjectFolders, SourceRootConfig};
 
 pub struct LoadCargoConfig {
+    pub run_rustc_build_scripts: bool,
     pub load_out_dirs_from_check: bool,
     pub with_proc_macro: bool,
 }
@@ -53,7 +54,7 @@ pub fn load_workspace(
 
     let build_data = if config.load_out_dirs_from_check {
         let mut collector = BuildDataCollector::default();
-        ws.collect_build_data_configs(&mut collector);
+        ws.collect_build_data_configs(&mut collector, config.run_rustc_build_scripts);
         Some(collector.collect(progress)?)
     } else {
         None
@@ -136,8 +137,11 @@ mod tests {
     fn test_loading_rust_analyzer() -> Result<()> {
         let path = Path::new(env!("CARGO_MANIFEST_DIR")).parent().unwrap().parent().unwrap();
         let cargo_config = Default::default();
-        let load_cargo_config =
-            LoadCargoConfig { load_out_dirs_from_check: false, with_proc_macro: false };
+        let load_cargo_config = LoadCargoConfig {
+            load_out_dirs_from_check: false,
+            with_proc_macro: false,
+            run_rustc_build_scripts: false,
+        };
         let (host, _vfs, _proc_macro) =
             load_workspace_at(path, &cargo_config, &load_cargo_config, &|_| {})?;
 
diff --git a/crates/rust-analyzer/src/cli/ssr.rs b/crates/rust-analyzer/src/cli/ssr.rs
index 79f426fff..8cc4eefc2 100644
--- a/crates/rust-analyzer/src/cli/ssr.rs
+++ b/crates/rust-analyzer/src/cli/ssr.rs
@@ -9,8 +9,13 @@ use ide_ssr::{MatchFinder, SsrPattern, SsrRule};
 pub fn apply_ssr_rules(rules: Vec<SsrRule>) -> Result<()> {
     use ide_db::base_db::SourceDatabaseExt;
     let cargo_config = Default::default();
-    let load_cargo_config =
-        LoadCargoConfig { load_out_dirs_from_check: true, with_proc_macro: true };
+    let load_cargo_config = LoadCargoConfig {
+        load_out_dirs_from_check: true,
+        with_proc_macro: true,
+        // This will currently never have rustcSource set, however if in
+        // future it does this will handle that case
+        run_rustc_build_scripts: true,
+    };
     let (host, vfs, _proc_macro) =
         load_workspace_at(&std::env::current_dir()?, &cargo_config, &load_cargo_config, &|_| {})?;
     let db = host.raw_database();
@@ -36,8 +41,13 @@ pub fn search_for_patterns(patterns: Vec<SsrPattern>, debug_snippet: Option<Stri
     use ide_db::base_db::SourceDatabaseExt;
     use ide_db::symbol_index::SymbolsDatabase;
     let cargo_config = Default::default();
-    let load_cargo_config =
-        LoadCargoConfig { load_out_dirs_from_check: true, with_proc_macro: true };
+    let load_cargo_config = LoadCargoConfig {
+        load_out_dirs_from_check: true,
+        with_proc_macro: true,
+        // This will currently never have rustcSource set, however if in
+        // future it does this will handle that case
+        run_rustc_build_scripts: true,
+    };
     let (host, _vfs, _proc_macro) =
         load_workspace_at(&std::env::current_dir()?, &cargo_config, &load_cargo_config, &|_| {})?;
     let db = host.raw_database();
diff --git a/crates/rust-analyzer/src/config.rs b/crates/rust-analyzer/src/config.rs
index 367136702..cbec8fce2 100644
--- a/crates/rust-analyzer/src/config.rs
+++ b/crates/rust-analyzer/src/config.rs
@@ -49,6 +49,8 @@ config_data! {
         /// Run build scripts (`build.rs`) for more precise code analysis.
         cargo_runBuildScripts |
         cargo_loadOutDirsFromCheck: bool = "false",
+        /// Disable running build scripts (`build.rs`) for the `rustc_private` crates in `rustcSource`.
+        cargo_disableRustcBuildScripts: bool = "false",
         /// Do not activate the `default` feature.
         cargo_noDefaultFeatures: bool    = "false",
         /// Compilation target (target triple).
@@ -482,6 +484,9 @@ impl Config {
     pub fn run_build_scripts(&self) -> bool {
         self.data.cargo_runBuildScripts || self.data.procMacro_enable
     }
+    pub fn run_rustc_build_scripts(&self) -> bool {
+        self.run_build_scripts() && !self.data.cargo_disableRustcBuildScripts
+    }
     pub fn cargo(&self) -> CargoConfig {
         let rustc_source = self.data.rustcSource.as_ref().map(|rustc_src| {
             if rustc_src == "discover" {
diff --git a/crates/rust-analyzer/src/reload.rs b/crates/rust-analyzer/src/reload.rs
index aa8504c3d..da02be2de 100644
--- a/crates/rust-analyzer/src/reload.rs
+++ b/crates/rust-analyzer/src/reload.rs
@@ -340,7 +340,10 @@ impl GlobalState {
         if self.config.run_build_scripts() && workspace_build_data.is_none() {
             let mut collector = BuildDataCollector::default();
             for ws in &workspaces {
-                ws.collect_build_data_configs(&mut collector);
+                ws.collect_build_data_configs(
+                    &mut collector,
+                    self.config.run_rustc_build_scripts(),
+                );
             }
             self.fetch_build_data_request(collector)
         }
diff --git a/docs/user/generated_config.adoc b/docs/user/generated_config.adoc
index 1dbf2a611..602c9432e 100644
--- a/docs/user/generated_config.adoc
+++ b/docs/user/generated_config.adoc
@@ -12,6 +12,8 @@
  List of features to activate.
 [[rust-analyzer.cargo.runBuildScripts]]rust-analyzer.cargo.runBuildScripts (default: `false`)::
  Run build scripts (`build.rs`) for more precise code analysis.
+[[rust-analyzer.cargo.disableRustcBuildScripts]]rust-analyzer.cargo.disableRustcBuildScripts (default: `false`)::
+ Disable running build scripts (`build.rs`) for the `rustc_private` crates in `rustcSource`.
 [[rust-analyzer.cargo.noDefaultFeatures]]rust-analyzer.cargo.noDefaultFeatures (default: `false`)::
  Do not activate the `default` feature.
 [[rust-analyzer.cargo.target]]rust-analyzer.cargo.target (default: `null`)::
diff --git a/editors/code/package.json b/editors/code/package.json
index 1987364bc..82011bb44 100644
--- a/editors/code/package.json
+++ b/editors/code/package.json
@@ -413,6 +413,11 @@
                     "default": false,
                     "type": "boolean"
                 },
+                "rust-analyzer.cargo.disableRustcBuildScripts": {
+                    "markdownDescription": "Disable running build scripts (`build.rs`) for the `rustc_private` crates in `rustcSource`.",
+                    "default": false,
+                    "type": "boolean"
+                },
                 "rust-analyzer.cargo.noDefaultFeatures": {
                     "markdownDescription": "Do not activate the `default` feature.",
                     "default": false,