"AttributeError: 'BinOp' object has no attribute 's'" when trying to install Transformers as local editable dependency

[nickchomey]

• I have searched the issue tracker and believe that this is not a duplicate.

Make sure you run commands with -v flag before pasting the output.

Steps to reproduce

1. create new pdm project pdm init
2. git clone https://github.com/huggingface/transformers.git
3. pdm add -e ./transformers --dev

Actual behavior

This error message:

Traceback (most recent call last):
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/packaging/requirements.py", line 35, in __init__
    parsed = parse_requirement(requirement_string)
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/packaging/_parser.py", line 64, in parse_requirement
    return _parse_requirement(Tokenizer(source, rules=DEFAULT_RULES))
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/packaging/_parser.py", line 73, in _parse_requirement
    name_token = tokenizer.expect(
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/packaging/_tokenizer.py", line 138, in expect
    raise self.raise_syntax_error(f"Expected {expected}")
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/packaging/_tokenizer.py", line 163, in raise_syntax_error
    raise ParserSyntaxError(
packaging._tokenizer.ParserSyntaxError: Expected package name at the start of dependency specifier
    ./transformers
    ^

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/models/requirements.py", line 482, in parse_as_pkg_requirement
    return PackageRequirement(line)
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/packaging/requirements.py", line 37, in __init__
    raise InvalidRequirement(str(e)) from e
packaging.requirements.InvalidRequirement: Expected package name at the start of dependency specifier
    ./transformers
    ^

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/packaging/requirements.py", line 35, in __init__
    parsed = parse_requirement(requirement_string)
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/packaging/_parser.py", line 64, in parse_requirement
    return _parse_requirement(Tokenizer(source, rules=DEFAULT_RULES))
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/packaging/_parser.py", line 73, in _parse_requirement
    name_token = tokenizer.expect(
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/packaging/_tokenizer.py", line 138, in expect
    raise self.raise_syntax_error(f"Expected {expected}")
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/packaging/_tokenizer.py", line 163, in raise_syntax_error
    raise ParserSyntaxError(
packaging._tokenizer.ParserSyntaxError: Expected package name at the start of dependency specifier
    ./transformers
    ^

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/models/requirements.py", line 508, in parse_requirement
    pkg_req = parse_as_pkg_requirement(line)
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/models/requirements.py", line 489, in parse_as_pkg_requirement
    return PackageRequirement(new_line)
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/packaging/requirements.py", line 37, in __init__
    raise InvalidRequirement(str(e)) from e
packaging.requirements.InvalidRequirement: Expected package name at the start of dependency specifier
    ./transformers
    ^

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/nick/.local/bin/pdm", line 8, in <module>
    sys.exit(main())
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/core.py", line 259, in main
    return Core().main(args)
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/core.py", line 191, in main
    raise cast(Exception, err).with_traceback(traceback)
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/core.py", line 186, in main
    f(project, options)
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/cli/commands/add.py", line 58, in handle
    actions.do_add(
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/cli/actions.py", line 257, in do_add
    for r in [parse_requirement(line, True) for line in editables] + [
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/cli/actions.py", line 257, in <listcomp>
    for r in [parse_requirement(line, True) for line in editables] + [
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/models/requirements.py", line 513, in parse_requirement
    r = FileRequirement.create(**m.groupdict())
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/models/requirements.py", line 275, in create
    return super().create(**kwargs)  # type: ignore
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/models/requirements.py", line 158, in create
    return cls(
  File "<string>", line 12, in __init__
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/models/requirements.py", line 266, in __post_init__
    self._check_installable()
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/models/requirements.py", line 385, in _check_installable
    result = Setup.from_directory(self.path.absolute())
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/models/setup.py", line 37, in from_directory
    return _SetupReader.read_from_directory(dir)
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/models/setup.py", line 61, in read_from_directory
    new_result = file_reader(filepath)
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/models/setup.py", line 100, in read_setup_py
    install_requires=cls._find_install_requires(setup_call, body),
  File "/home/nick/.local/share/pdm/venv/lib/python3.10/site-packages/pdm/models/setup.py", line 264, in _find_install_requires
    install_requires.append(el.s)
AttributeError: 'BinOp' object has no attribute 's'

Expected behavior

I'd expect it to be installed. Interestingly, if you install with pdm add -e git+https://github.com/huggingface/transformers.git --dev, it installs just fine.

Here's a seemingly relevant issue from Poetry: python-poetry/poetry#1900

Environment Information

# Paste the output of `pdm info && pdm info --env` below:
PDM version:
  2.4.5
Python Interpreter:
  /home/nick/zxcv/.venv/bin/python (3.10)
Project Root:
  /home/nick/zxcv
Project Packages:
  None
{
  "implementation_name": "cpython",
  "implementation_version": "3.10.6",
  "os_name": "posix",
  "platform_machine": "x86_64",
  "platform_release": "5.15.90.1-microsoft-standard-WSL2",
  "platform_system": "Linux",
  "platform_version": "#1 SMP Fri Jan 27 02:56:13 UTC 2023",
  "python_full_version": "3.10.6",
  "platform_python_implementation": "CPython",
  "python_version": "3.10",
  "sys_platform": "linux"
}