[try without modding PATH]

Author: kinke

.github/actions/1-setup/action.yml

@@ -60,8 +60,6 @@ runs:
         mkdir clang
         tar -xf clang.tar.xz --strip 1 -C clang
         rm clang.tar.xz
-        # prepend its bin/ dir to PATH for subsequent steps
-        echo "$PWD/clang/bin" >> "$GITHUB_PATH"
     - name: 'Windows: Install clang v19.1.3 from GitHub'
       if: runner.os == 'Windows'
       shell: bash

.github/workflows/main.yml

@@ -85,8 +85,8 @@ jobs:
             os: macos-14
             arch: arm64
             extra_cmake_flags: >-
-              -DCMAKE_C_COMPILER=clang
-              -DCMAKE_CXX_COMPILER=clang++
+              -DCMAKE_C_COMPILER=$PWD/../clang/bin/clang
+              -DCMAKE_CXX_COMPILER=$PWD/../clang/bin/clang++
               -DD_COMPILER_FLAGS="-O -flto=full -defaultlib=phobos2-ldc-lto,druntime-ldc-lto -L-exported_symbol '-L__*' -L-w"
               -DEXTRA_CXXFLAGS=-flto=full
             with_pgo: true