Merge branch 'main' into revert

.bazelci/presubmit.yml

@@ -539,17 +539,13 @@ tasks:
     platform: ubuntu2004
     working_directory: examples/crate_universe_local_path
     run_targets:
-      - "//:vendor_lazy_static_out_of_tree"
-    test_targets:
-      - "//..."
+      - "//:vendor_edit_test_out_of_tree"
   crate_universe_local_path_in_tree:
     name: Crate Universe Local Path In Tree
     platform: ubuntu2004
     working_directory: examples/crate_universe_local_path
     run_targets:
-      - "//:vendor_lazy_static_in_tree"
-    test_targets:
-      - "//..."
+      - "//:vendor_edit_test_in_tree"
 # See https://github.com/bazelbuild/rules_rust/issues/2186 about re-enabling these.
 #  crate_universe_examples_windows:
 #    name: Crate Universe Examples

MODULE.bazel

@@ -2,7 +2,7 @@
 
 module(
     name = "rules_rust",
-    version = "0.55.6",
+    version = "0.56.0",
 )
 
 ###############################################################################

cargo/BUILD.bazel

@@ -1,9 +1,13 @@
 load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
 
-package(default_visibility = ["//visibility:public"])
+exports_files(["defs.bzl"])
 
 bzl_library(
     name = "bzl_lib",
-    srcs = glob(["**/*.bzl"]),
-    deps = ["//cargo/private:bzl_lib"],
+    srcs = glob(["*.bzl"]),
+    visibility = ["//visibility:public"],
+    deps = [
+        "//cargo/private:bzl_lib",
+        "//cargo/settings:bzl_lib",
+    ],
 )

cargo/defs.bzl

@@ -1,4 +1,7 @@
-"""Common definitions for the `@rules_rust//cargo` package"""
+"""# Cargo
+
+Common definitions for the `@rules_rust//cargo` package
+"""
 
 load(
     "//cargo/private:cargo_bootstrap.bzl",

cargo/private/cargo_build_script.bzl

@@ -654,9 +654,6 @@ cargo_build_script = rule(
         "_cargo_manifest_dir_filename_suffixes_to_retain": attr.label(
             default = Label("//cargo/settings:cargo_manifest_dir_filename_suffixes_to_retain"),
         ),
-        "_cc_toolchain": attr.label(
-            default = Label("@bazel_tools//tools/cpp:current_cc_toolchain"),
-        ),
         "_debug_std_streams_output_group": attr.label(
             default = Label("//cargo/settings:debug_std_streams_output_group"),
         ),

cargo/settings/BUILD.bazel

@@ -1,43 +1,32 @@
-load("@bazel_skylib//rules:common_settings.bzl", "bool_flag", "string_list_flag")
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+load(
+    ":settings.bzl",
+    "cargo_manifest_dir_filename_suffixes_to_retain",
+    "debug_std_streams_output_group",
+    "experimental_symlink_execroot",
+    "incompatible_runfiles_cargo_manifest_dir",
+    "use_default_shell_env",
+)
 
 package(default_visibility = ["//visibility:public"])
 
-# A flag for which causes `cargo_build_script` to symlink the execroot of the action to
-# the `CARGO_MANIFEST_DIR` where the scripts are run.
-bool_flag(
-    name = "experimental_symlink_execroot",
-    build_setting_default = False,
-)
+exports_files(["settings.bzl"])
 
-# A flag which causes `cargo_build_script` to write an explicit `CARGO_MANFIEST_DIR`
-# directory from an action instead of using runfiles directories which cannot be
-# passed to downstream actions.
-# https://github.com/bazelbuild/bazel/issues/15486
-bool_flag(
-    name = "incompatible_runfiles_cargo_manifest_dir",
-    build_setting_default = True,
-)
-
-# A flag which determines what files are retained in `CARGO_MANIFEST_DIR` directories
-# that are created in `CargoBuildScriptRun` actions.
-string_list_flag(
-    name = "cargo_manifest_dir_filename_suffixes_to_retain",
-    build_setting_default = [
-        ".lib",
-        ".so",
+bzl_library(
+    name = "bzl_lib",
+    srcs = glob(["*.bzl"]),
+    visibility = ["//cargo:__pkg__"],
+    deps = [
+        "@bazel_skylib//rules:common_settings",
     ],
 )
 
-# A flag which adds a `streams` output group to `cargo_build_script` targets that contain
-# the raw `stderr` and `stdout` streams from the build script.
-bool_flag(
-    name = "debug_std_streams_output_group",
-    build_setting_default = False,
-)
+cargo_manifest_dir_filename_suffixes_to_retain()
 
-# A flag which controls the global default of `ctx.actions.run.use_default_shell_env`
-# for `cargo_build_script` targets.
-bool_flag(
-    name = "use_default_shell_env",
-    build_setting_default = True,
-)
+debug_std_streams_output_group()
+
+experimental_symlink_execroot()
+
+incompatible_runfiles_cargo_manifest_dir()
+
+use_default_shell_env()

cargo/settings/settings.bzl

@@ -0,0 +1,56 @@
+"""# Cargo settings
+
+Definitions for all `@rules_rust//cargo` settings
+"""
+
+load("@bazel_skylib//rules:common_settings.bzl", "bool_flag", "string_list_flag")
+
+def experimental_symlink_execroot():
+    """A flag for which causes `cargo_build_script` to symlink the execroot of the action to \
+    the `CARGO_MANIFEST_DIR` where the scripts are run.
+    """
+    bool_flag(
+        name = "experimental_symlink_execroot",
+        build_setting_default = False,
+    )
+
+def incompatible_runfiles_cargo_manifest_dir():
+    """A flag which causes `cargo_build_script` to write an explicit `CARGO_MANFIEST_DIR` \
+    directory from an action instead of using runfiles directories which cannot be \
+    passed to downstream actions.
+
+    https://github.com/bazelbuild/bazel/issues/15486
+    """
+    bool_flag(
+        name = "incompatible_runfiles_cargo_manifest_dir",
+        build_setting_default = True,
+    )
+
+def cargo_manifest_dir_filename_suffixes_to_retain():
+    """A flag which determines what files are retained in `CARGO_MANIFEST_DIR` directories \
+    that are created in `CargoBuildScriptRun` actions.
+    """
+    string_list_flag(
+        name = "cargo_manifest_dir_filename_suffixes_to_retain",
+        build_setting_default = [
+            ".lib",
+            ".so",
+        ],
+    )
+
+def debug_std_streams_output_group():
+    """A flag which adds a `streams` output group to `cargo_build_script` targets that contain \
+    the raw `stderr` and `stdout` streams from the build script.
+    """
+    bool_flag(
+        name = "debug_std_streams_output_group",
+        build_setting_default = False,
+    )
+
+def use_default_shell_env():
+    """A flag which controls the global default of `ctx.actions.run.use_default_shell_env` for `cargo_build_script` targets.
+    """
+    bool_flag(
+        name = "use_default_shell_env",
+        build_setting_default = True,
+    )

crate_universe/src/cli/generate.rs

@@ -119,9 +119,12 @@ pub fn generate(opt: GenerateOptions) -> Result<()> {
             // Write the outputs to disk
             write_outputs(normalized_outputs, opt.dry_run)?;
 
+            let splicing_manifest = SplicingManifest::try_from_path(&opt.splicing_manifest)?;
+
             write_paths_to_track(
                 &opt.paths_to_track,
                 &opt.warnings_output_path,
+                splicing_manifest.manifests.keys().cloned(),
                 context
                     .crates
                     .values()
@@ -164,9 +167,12 @@ pub fn generate(opt: GenerateOptions) -> Result<()> {
         &opt.nonhermetic_root_bazel_workspace_dir,
     )?;
 
+    let splicing_manifest = SplicingManifest::try_from_path(&opt.splicing_manifest)?;
+
     write_paths_to_track(
         &opt.paths_to_track,
         &opt.warnings_output_path,
+        splicing_manifest.manifests.keys().cloned(),
         annotations.lockfile.crates.values(),
         cargo_lockfile.patch.unused.iter(),
     )?;
@@ -189,8 +195,6 @@ pub fn generate(opt: GenerateOptions) -> Result<()> {
 
     // Ensure Bazel lockfiles are written to disk so future generations can be short-circuited.
     if let Some(lockfile) = opt.lockfile {
-        let splicing_manifest = SplicingManifest::try_from_path(&opt.splicing_manifest)?;
-
         let lock_content =
             lock_context(context, &config, &splicing_manifest, &cargo_bin, rustc_bin)?;
 
@@ -220,10 +224,12 @@ fn update_cargo_lockfile(path: &Path, cargo_lockfile: Lockfile) -> Result<()> {
 fn write_paths_to_track<
     'a,
     SourceAnnotations: Iterator<Item = &'a SourceAnnotation>,
+    Paths: Iterator<Item = Utf8PathBuf>,
     UnusedPatches: Iterator<Item = &'a cargo_lock::Dependency>,
 >(
     output_file: &Path,
     warnings_output_path: &Path,
+    manifests: Paths,
     source_annotations: SourceAnnotations,
     unused_patches: UnusedPatches,
 ) -> Result<()> {
@@ -235,6 +241,7 @@ fn write_paths_to_track<
                 None
             }
         })
+        .chain(manifests)
         .collect();
     std::fs::write(
         output_file,

crate_universe/src/metadata/cargo_tree_resolver.rs

@@ -150,6 +150,7 @@ impl TreeResolver {
                     // host triple instead of the host triple detected by rustc.
                     .env("RUSTC_WRAPPER", rustc_wrapper)
                     .env("HOST_TRIPLE", host_triple)
+                    .env("CARGO_CACHE_RUSTC_INFO", "0")
                     .current_dir(manifest_path.parent().expect("All manifests should have a valid parent."))
                     .arg("tree")
                     .arg("--manifest-path")

crate_universe/tests/cargo_integration_test.rs

@@ -526,16 +526,24 @@ fn host_specific_build_deps() {
     }
 
     let r = runfiles::Runfiles::create().unwrap();
+
+    let src_cargo_toml = runfiles::rlocation!(
+        r,
+        "rules_rust/crate_universe/test_data/metadata/host_specific_build_deps/Cargo.toml"
+    )
+    .unwrap();
+
+    // Put Cargo.toml into writable directory structure and create target/ directory to verify that
+    // cargo does not incorrectly cache rustc info in target/.rustc_info.json file.
+    let scratch = tempfile::tempdir().unwrap();
+    let cargo_toml = scratch.path().join("Cargo.toml");
+    fs::copy(src_cargo_toml, &cargo_toml).unwrap();
+    fs::create_dir(scratch.path().join("target")).unwrap();
+
     let metadata = run(
         "host_specific_build_deps",
         HashMap::from([(
-            runfiles::rlocation!(
-                r,
-                "rules_rust/crate_universe/test_data/metadata/host_specific_build_deps/Cargo.toml"
-            )
-            .unwrap()
-            .to_string_lossy()
-            .to_string(),
+            cargo_toml.to_string_lossy().to_string(),
             "//:test_input".to_string(),
         )]),
         "rules_rust/crate_universe/test_data/metadata/host_specific_build_deps/Cargo.lock",