Make dep_variant_infos a list, not a depset

Author: dzbarsky

cargo/private/cargo_build_script.bzl

@@ -558,7 +558,7 @@ def _cargo_build_script_impl(ctx):
         else:
             dep_infos = [
                 dep_variant_info.dep_info
-                for dep_variant_info in dep[CrateGroupInfo].dep_variant_infos.to_list()
+                for dep_variant_info in dep[CrateGroupInfo].dep_variant_infos
                 if dep_variant_info.dep_info
             ]
 

extensions/prost/private/prost.bzl

@@ -6,7 +6,7 @@ load("@rules_proto//proto:proto_common.bzl", proto_toolchains = "toolchains")
 load("@rules_rust//rust:defs.bzl", "rust_analyzer_aspect", "rust_common")
 
 # buildifier: disable=bzl-visibility
-load("@rules_rust//rust/private:providers.bzl", "RustAnalyzerGroupInfo", "RustAnalyzerInfo")
+load("@rules_rust//rust/private:providers.bzl", "CrateGroupInfo", "CrateInfo", "DepInfo", "DepVariantInfo", "RustAnalyzerGroupInfo", "RustAnalyzerInfo")
 
 # buildifier: disable=bzl-visibility
 load("@rules_rust//rust/private:rust.bzl", "RUSTC_ATTRS")
@@ -252,13 +252,13 @@ def _rust_prost_aspect_impl(target, ctx):
     for prost_runtime in runtimes:
         if not prost_runtime:
             continue
-        if rust_common.crate_group_info in prost_runtime:
-            crate_group_info = prost_runtime[rust_common.crate_group_info]
-            runtime_deps.extend(crate_group_info.dep_variant_infos.to_list())
+        if CrateGroupInfo in prost_runtime:
+            crate_group_info = prost_runtime[CrateGroupInfo]
+            runtime_deps.extend(crate_group_info.dep_variant_infos)
         else:
-            runtime_deps.append(rust_common.dep_variant_info(
-                crate_info = prost_runtime[rust_common.crate_info] if rust_common.crate_info in prost_runtime else None,
-                dep_info = prost_runtime[rust_common.dep_info] if rust_common.dep_info in prost_runtime else None,
+            runtime_deps.append(DepVariantInfo(
+                crate_info = prost_runtime[CrateInfo] if CrateInfo in prost_runtime else None,
+                dep_info = prost_runtime[DepInfo] if DepInfo in prost_runtime else None,
                 cc_info = prost_runtime[CcInfo] if CcInfo in prost_runtime else None,
                 build_info = None,
             ))
@@ -269,26 +269,24 @@ def _rust_prost_aspect_impl(target, ctx):
 
     proto_deps = getattr(ctx.rule.attr, "deps", [])
 
-    direct_deps = []
-    transitive_deps = [depset(runtime_deps)]
+    direct_deps = list(runtime_deps)
+    transitive_deps = []
     for proto_dep in proto_deps:
         proto_info = proto_dep[ProstProtoInfo]
 
         direct_deps.append(proto_info.dep_variant_info)
-        transitive_deps.append(depset(
-            [proto_info.dep_variant_info],
-            transitive = [proto_info.transitive_dep_infos],
-        ))
+        transitive_deps.append(proto_info.transitive_dep_infos)
 
         if RustAnalyzerInfo in proto_dep:
             rust_analyzer_deps.append(proto_dep[RustAnalyzerInfo])
 
-    transform_infos = []
-    for data_target in getattr(ctx.rule.attr, "data", []):
-        if ProstTransformInfo in data_target:
-            transform_infos.append(data_target[ProstTransformInfo])
+    transform_infos = [
+        data_target[ProstTransformInfo]
+        for data_target in getattr(ctx.rule.attr, "data", [])
+        if ProstTransformInfo in data_target
+    ]
 
-    rust_deps = runtime_deps + direct_deps
+    rust_deps = list(direct_deps)
     crate_name_overrides = []
     for transform_info in transform_infos:
         rust_deps.extend(transform_info.deps)
@@ -352,7 +350,7 @@ def _rust_prost_aspect_impl(target, ctx):
     return [
         ProstProtoInfo(
             dep_variant_info = dep_variant_info,
-            transitive_dep_infos = depset(transitive = transitive_deps),
+            transitive_dep_infos = depset(direct_deps, transitive = transitive_deps),
             package_info = package_info_file,
         ),
         rust_analyzer_info,
@@ -408,18 +406,14 @@ def _rust_prost_library_impl(ctx):
 
     prost_toolchain = ctx.toolchains[TOOLCHAIN_TYPE]
 
-    transitive = []
+    dep_variant_infos = [dep_variant_info]
+
     if prost_toolchain.include_transitive_deps:
-        transitive = [rust_proto_info.transitive_dep_infos]
+        dep_variant_infos = depset(dep_variant_infos, transitive = [rust_proto_info.transitive_dep_infos]).to_list()
 
     return [
         DefaultInfo(files = depset([dep_variant_info.crate_info.output])),
-        rust_common.crate_group_info(
-            dep_variant_infos = depset(
-                [dep_variant_info],
-                transitive = transitive,
-            ),
-        ),
+        CrateGroupInfo(dep_variant_infos = dep_variant_infos),
         OutputGroupInfo(
             rust_generated_srcs = rust_generated_srcs,
             proto_descriptor_set = proto_descriptor_set,

rust/private/rust.bzl

@@ -25,6 +25,8 @@ load(
     "BuildInfo",
     "CrateGroupInfo",
     "CrateInfo",
+    "DepInfo",
+    "DepVariantInfo",
     "LintsInfo",
 )
 load("//rust/private:rustc.bzl", "collect_extra_rustc_flags", "is_no_std", "rustc_compile_action")
@@ -78,7 +80,7 @@ def _assert_correct_dep_mapping(ctx):
         else:
             types = [
                 dep_variant_info.crate_info.type
-                for dep_variant_info in dep[CrateGroupInfo].dep_variant_infos.to_list()
+                for dep_variant_info in dep[CrateGroupInfo].dep_variant_infos
                 if dep_variant_info.crate_info
             ]
 
@@ -546,30 +548,27 @@ def _rust_test_impl(ctx):
 
 def _rust_library_group_impl(ctx):
     dep_variant_infos = []
-    dep_variant_transitive_infos = []
     runfiles = []
 
     for dep in ctx.attr.deps:
-        if rust_common.crate_info in dep:
-            dep_variant_infos.append(rust_common.dep_variant_info(
-                crate_info = dep[rust_common.crate_info] if rust_common.crate_info in dep else None,
-                dep_info = dep[rust_common.dep_info] if rust_common.crate_info in dep else None,
+        if CrateInfo in dep:
+            dep_variant_infos.append(DepVariantInfo(
+                crate_info = dep[CrateInfo] if CrateInfo in dep else None,
+                dep_info = dep[DepInfo] if DepInfo in dep else None,
                 build_info = dep[BuildInfo] if BuildInfo in dep else None,
                 cc_info = dep[CcInfo] if CcInfo in dep else None,
                 crate_group_info = None,
             ))
-        elif rust_common.crate_group_info in dep:
-            dep_variant_transitive_infos.append(dep[rust_common.crate_group_info].dep_variant_infos)
+        elif CrateGroupInfo in dep:
+            dep_variant_infos.extend(dep[CrateGroupInfo].dep_variant_infos)
         else:
             fail("crate_group_info targets can only depend on rust_library or rust_library_group targets.")
 
         if dep[DefaultInfo].default_runfiles != None:
             runfiles.append(dep[DefaultInfo].default_runfiles)
 
     return [
-        rust_common.crate_group_info(
-            dep_variant_infos = depset(dep_variant_infos, transitive = dep_variant_transitive_infos),
-        ),
+        CrateGroupInfo(dep_variant_infos = dep_variant_infos),
         DefaultInfo(runfiles = ctx.runfiles().merge_all(runfiles)),
         coverage_common.instrumented_files_info(
             ctx,

rust/private/rustc.bzl

@@ -263,7 +263,7 @@ def collect_deps(
             crate_deps.append(dep)
 
         if crate_group:
-            for dep_variant_info in crate_group.dep_variant_infos.to_list():
+            for dep_variant_info in crate_group.dep_variant_infos:
                 crate_deps.append(struct(
                     crate_info = dep_variant_info.crate_info,
                     dep_info = dep_variant_info.dep_info,

test/unit/cc_info/cc_info_test.bzl

@@ -4,6 +4,7 @@ load("@bazel_skylib//lib:unittest.bzl", "analysistest", "asserts")
 load("@rules_cc//cc:defs.bzl", "cc_import", "cc_library")
 load("@rules_cc//cc/common:cc_info.bzl", "CcInfo")
 load("//rust:defs.bzl", "rust_binary", "rust_common", "rust_library", "rust_proc_macro", "rust_shared_library", "rust_static_library")
+load("//rust:rust_common.bzl", "CrateGroupInfo", "DepVariantInfo")
 
 def _is_dylib_on_windows(ctx):
     return ctx.target_platform_has_constraint(ctx.attr._windows[platform_common.ConstraintValueInfo])
@@ -178,15 +179,13 @@ def _build_test(ctx):
 build_test = analysistest.make(_build_test)
 
 def _rust_cc_injection_impl(ctx):
-    dep_variant_info = rust_common.dep_variant_info(
+    dep_variant_info = DepVariantInfo(
         cc_info = ctx.attr.cc_dep[CcInfo],
         crate_info = None,
         dep_info = None,
     )
     return [
-        rust_common.crate_group_info(
-            dep_variant_infos = depset([dep_variant_info]),
-        ),
+        CrateGroupInfo(dep_variant_infos = [dep_variant_info]),
     ]
 
 rust_cc_injection = rule(