Loop over user prompts for clang path until receiving a valid response.
  Default is used if no input is given. Set CLANG_COMPILER_PATH and write
  environment variables CC and BAZEL_COMPILER to .bazelrc.

  Args:
    environ_cp: (Dict) copy of the os.environ.

  Returns:
    string value for clang_compiler_path.
  """
  # Default path if clang-18 is installed by using apt-get install

ENV BAZEL_LLVM "C:\tools\LLVM"

# These variables may be useful, but so far haven't been. Keeping for posterity.
# ENV CLANG_COMPILER_PATH "C:\tools\llvm\bin\clang.exe"
# ENV CC "C:\tools\llvm\bin\clang.exe"
# ENV BAZEL_COMPILER "C:\tools\llvm\bin\clang.exe"

ENV BAZEL_SH "C:\tools\msys64\usr\bin\bash.exe"
ENV BAZEL_VS "C:\Program Files\Microsoft Visual Studio\2022\BuildTools"