message: Allow functions that prompt for a path to resolve symbolic links.
  This may be valuable to enable globally (and disable via a user flag), but for now I've enabled it for one specific call which was causing an error in
  Resolves
diff: @@ -627,6 +627,7 @@ def prompt_loop_or_load_from_env(environ_cp,
  check_success,
  error_msg,
  suppress_default_error=False,
  + resolve_symlinks=False,
  n_ask_attempts=_DEFAULT_PROMPT_ASK_ATTEMPTS):
  """Loop over user prompts for an ENV param until receiving a valid response.
  @@ -647,6 +648,7 @@ def prompt_loop_or_load_from_env(environ_cp,
  invalid response upon check_success(input) failure.
  suppress_default_error: (Bool) Suppress the above error message in favor of
  one from the check_success function.
  + resolve_symlinks: (Bool) Translate symbolic links into the real filepath.
  n_ask_attempts: (Integer) Number of times to query for valid input before
  raising an error and quitting.
  @@ -678,6 +680,8 @@ def prompt_loop_or_load_from_env(environ_cp,
  'Assuming to be a scripting mistake.' %
  (var_name, n_ask_attempts))
  + if resolve_symlinks and os.path.islink(val):
  + val = os.path.realpath(val)
  environ_cp[var_name] = val
  return val
  @@ -837,6 +841,7 @@ def set_gcc_host_compiler_path(environ_cp):
  var_default=default_gcc_host_compiler_path,
  ask_for_var='Please specify which gcc should be used by nvcc as the host compiler.',
  check_success=os.path.exists,
  + resolve_symlinks=True,
  error_msg='Invalid gcc path. %s cannot be found.',
  )
  