Can you prevent

--changed-since

for

./pants

to read changes at the root directory? (This was possible before with the

--changed-parent

option, but it has been deprecated: https://www.pantsbuild.org/v2.0/docs/reference-changed#deprecated-options) I am using

./pants 2.14.0

on a monorepo with multiple programming languages. pants is installed in the

py/mono

directory. It seems that if the root directory contain some changes, then running

./pants --changed-since=master package

throws an error similar to this:

Exception caught: (builtins.ValueError)
  File "/home/circleci/.cache/pants/setup/bootstrap-Linux-x86_64/2.13.0_py39/bin/pants", line 8, in <module>
    sys.exit(main())
  File "/home/circleci/.cache/pants/setup/bootstrap-Linux-x86_64/2.13.0_py39/lib/python3.9/site-packages/pants/bin/pants_loader.py", line 115, in main
    PantsLoader.main()
  File "/home/circleci/.cache/pants/setup/bootstrap-Linux-x86_64/2.13.0_py39/lib/python3.9/site-packages/pants/bin/pants_loader.py", line 111, in main
    cls.run_default_entrypoint()
  File "/home/circleci/.cache/pants/setup/bootstrap-Linux-x86_64/2.13.0_py39/lib/python3.9/site-packages/pants/bin/pants_loader.py", line 93, in run_default_entrypoint
    exit_code = runner.run(start_time)
  File "/home/circleci/.cache/pants/setup/bootstrap-Linux-x86_64/2.13.0_py39/lib/python3.9/site-packages/pants/bin/pants_runner.py", line 99, in run
    runner = LocalPantsRunner.create(
  File "/home/circleci/.cache/pants/setup/bootstrap-Linux-x86_64/2.13.0_py39/lib/python3.9/site-packages/pants/bin/local_pants_runner.py", line 159, in create
    specs = calculate_specs(
  File "/home/circleci/.cache/pants/setup/bootstrap-Linux-x86_64/2.13.0_py39/lib/python3.9/site-packages/pants/init/specs_calculator.py", line 90, in calculate_specs
    changed_files = tuple(changed_options.changed_files(maybe_git_worktree.git_worktree))
  File "/home/circleci/.cache/pants/setup/bootstrap-Linux-x86_64/2.13.0_py39/lib/python3.9/site-packages/pants/vcs/changed.py", line 125, in changed_files
    git_worktree.changed_files(
  File "/home/circleci/.cache/pants/setup/bootstrap-Linux-x86_64/2.13.0_py39/lib/python3.9/site-packages/pants/vcs/git.py", line 107, in changed_files
    return {self._fix_git_relative_path(f, relative_to) for f in files}
  File "/home/circleci/.cache/pants/setup/bootstrap-Linux-x86_64/2.13.0_py39/lib/python3.9/site-packages/pants/vcs/git.py", line 107, in <setcomp>
    return {self._fix_git_relative_path(f, relative_to) for f in files}
  File "/home/circleci/.cache/pants/setup/bootstrap-Linux-x86_64/2.13.0_py39/lib/python3.9/site-packages/pants/vcs/git.py", line 70, in _fix_git_relative_path
    return str((self.worktree / worktree_path).relative_to(relative_to))
  File "/home/circleci/.pyenv/versions/3.9.15/lib/python3.9/pathlib.py", line 939, in relative_to
    raise ValueError("{!r} is not in the subpath of {!r}"

Exception message: '/home/circleci/br-monorepo/dev.tmpl' is not in the subpath of '/home/circleci/br-monorepo/py/mono' OR one path is relative and the other is absolute.
NoneType: None

Looking at the pants source code, it seems

./pants

will use the git API to obtain all the changed files, and then compute the path relative to the build root:

git_worktree.changed_files(                                                             
   from_commit=changes_since, include_untracked=True, relative_to=get_buildroot()      
),

For example, if my build root is py/mono and a file is found at py/mono/a/b/c, then it will return a/b/c So it seems that it will throw an error if the changed file is outside the pants directory. Is it possible to prevent this behavior, i.e., just ignore those files?