[BUG] setuptools 64.0.0 breaks editable install

### setuptools version



setuptools==64.0.0



### Python version



Python 3.10.6



### OS



Ubuntu jammy



### Additional environment information



_No response_



### Description



After creating a simple project and installing it as editable with `pip install -e`, I'm unable to import modules from the package.



### Expected behavior



We should be able to import a package installed as editable.



### How to Reproduce



*1. Create this simple project structure*



`pyproject.toml`

```

[build-system]

requires = [

  "setuptools==64.0.0",

  "wheel",

]

build-backend = "setuptools.build_meta"



[project]

name = "foo"

version = "1.0.0"



[tool.setuptools]

packages.find.include = ["foo.*"]

```



`setup.py`

```

from setuptools import setup



setup()

```



`foo/__init__.py`

```

__version__ = "1.0.0"

```



*2. Create and activate a venv:*

```

python -mvenv venv

. venv/bin/activate

```



*3. Install the project as editable:*

```

python install -e .

```



Change to another directory and try to import the package:

```

python -c "import foo"

```









### Output



```console

Traceback (most recent call last):

  File "<string>", line 1, in <module>

ModuleNotFoundError: No module named 'foo'

```

[]