Various cleanups (#1828)

Author: UebelAndre

docs/index.md

@@ -60,7 +60,9 @@ To build with a particular version of the Rust compiler, pass that version to [`
 ```python
 rust_register_toolchains(
     edition = "2021",
-    versions = ["1.66.1"],
+    versions = [
+        "1.66.1"
+    ],
 )
 ```
 

proto/repositories.bzl

@@ -12,7 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# buildifier: disable=module-docstring
+"""Dependencies for Rust proto rules"""
+
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 load("@bazel_tools//tools/build_defs/repo:utils.bzl", "maybe")
 load("//proto/3rdparty/crates:defs.bzl", "crate_repositories")

rust/private/clippy.bzl

@@ -217,8 +217,12 @@ rust_clippy_aspect = aspect(
             doc = "The desired `--error-format` flags for clippy",
             default = "//:error_format",
         ),
-        "_extra_rustc_flag": attr.label(default = "//:extra_rustc_flag"),
-        "_extra_rustc_flags": attr.label(default = "//:extra_rustc_flags"),
+        "_extra_rustc_flag": attr.label(
+            default = Label("//:extra_rustc_flag"),
+        ),
+        "_extra_rustc_flags": attr.label(
+            default = Label("//:extra_rustc_flags"),
+        ),
         "_process_wrapper": attr.label(
             doc = "A process wrapper for running clippy on all platforms",
             default = Label("//util/process_wrapper"),

rust/private/dummy_cc_toolchain/dummy_cc_toolchain.bzl

@@ -1,4 +1,5 @@
-# buildifier: disable=module-docstring
+"""Cc toolchain definitions for use on wasm platforms"""
+
 def _dummy_cc_toolchain_impl(_ctx):
     # The `all_files` attribute is referenced by rustc_compile_action().
     return [platform_common.ToolchainInfo(all_files = depset([]))]

rust/private/rust.bzl

@@ -12,7 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# buildifier: disable=module-docstring
+"""Rust rule implementations"""
+
 load("@bazel_skylib//lib:paths.bzl", "paths")
 load("//rust/private:common.bzl", "rust_common")
 load("//rust/private:rustc.bzl", "rustc_compile_action")

rust/private/transitions.bzl

@@ -1,25 +1,6 @@
-# buildifier: disable=module-docstring
-load("//rust:defs.bzl", "rust_common")
-
-def _wasm_bindgen_transition(_settings, _attr):
-    """The implementation of the `wasm_bindgen_transition` transition
-
-    Args:
-        _settings (dict): A dict {String:Object} of all settings declared
-            in the inputs parameter to `transition()`
-        _attr (dict): A dict of attributes and values of the rule to which
-            the transition is attached
-
-    Returns:
-        dict: A dict of new build settings values to apply
-    """
-    return {"//command_line_option:platforms": str(Label("//rust/platform:wasm"))}
+"""Internal transition implementations for core Rust rules"""
 
-wasm_bindgen_transition = transition(
-    implementation = _wasm_bindgen_transition,
-    inputs = [],
-    outputs = ["//command_line_option:platforms"],
-)
+load("//rust:defs.bzl", "rust_common")
 
 def _import_macro_dep_bootstrap_transition(_settings, _attr):
     """The implementation of the `import_macro_dep_bootstrap_transition` transition.

rust/toolchain.bzl

@@ -729,7 +729,7 @@ rust_toolchain = rule(
             default = Label("@bazel_tools//tools/cpp:current_cc_toolchain"),
         ),
         "_pipelined_compilation": attr.label(
-            default = "@rules_rust//rust/settings:pipelined_compilation",
+            default = Label("//rust/settings:pipelined_compilation"),
         ),
         "_rename_first_party_crates": attr.label(
             default = Label("//rust/settings:rename_first_party_crates"),

test/load_arbitrary_tool/load_arbitrary_tool_test.bzl

@@ -1,4 +1,5 @@
-# buildifier: disable=module-docstring
+"""Tests for `load_arbitrary_tool`"""
+
 load("//rust:repositories.bzl", "load_arbitrary_tool")
 load("//rust/platform:triple.bzl", "get_host_triple")
 load("//rust/platform:triple_mappings.bzl", "system_to_binary_ext")

wasm_bindgen/BUILD.bazel

@@ -20,6 +20,7 @@ bzl_library(
     deps = [
         "//rust:bzl_lib",
         "//wasm_bindgen/3rdparty:bzl_lib",
+        "//wasm_bindgen/private:bzl_lib",
     ],
 )
 

wasm_bindgen/private/BUILD.bazel

@@ -0,0 +1,9 @@
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+
+bzl_library(
+    name = "bzl_lib",
+    srcs = [
+        "transitions.bzl",
+    ],
+    visibility = ["//wasm_bindgen:__pkg__"],
+)