Simplify toolchain setup

Author: SimplyDanny

.bazelrc

@@ -12,8 +12,8 @@ build:macos \
   --macos_minimum_os=13.5 --host_macos_minimum_os=13.5
 
 build:windows \
-  --extra_toolchains=@local_config_cc//:cc-toolchain-x64_windows-clang-cl \
-  --extra_execution_platforms=//:x64_windows-clang-cl
+  --compiler=clang-cl \
+  --action_env=BAZEL_USE_CPP_ONLY_TOOLCHAIN=1
 
 build \
   --disk_cache=~/.bazel_cache \

.github/workflows/test.yml

@@ -74,9 +74,6 @@ jobs:
             arch: arm64
             windows-display-name: '11 ARM'
             swift-version: 6.2.1
-    env:
-      CC: clang
-      BAZEL_LLVM: C:\Program Files\LLVM
     steps:
       - uses: compnerd/gha-setup-swift@main
         with:

BUILD

@@ -23,15 +23,6 @@ config_setting(
     },
 )
 
-platform(
-    name = "x64_windows-clang-cl",
-    constraint_values = [
-        "@platforms//cpu:x86_64",
-        "@platforms//os:windows",
-        "@bazel_tools//tools/cpp:clang-cl",
-    ],
-)
-
 # Targets
 
 swift_library(