Python 3.12 installation fails

```
× python setup.py egg_info did not run successfully.
│ exit code: 1
╰─> [6 lines of output]
Traceback (most recent call last):
File "", line 2, in
File "", line 34, in
File "/tmp/pip-install-btpgg84o/http-parser_a6c14b2ad3cd4d90a8e000168824cb8d/setup.py", line 12, in
from imp import load_source
ModuleNotFoundError: No module named 'imp'
[end of output]
```

`imp` is deprecated and was removed with 3.12

Start by locating the repository's setup.py and the import of imp shown in the traceback. Verify the installation under Python 3.12; it is done when the package can be installed without the ModuleNotFoundError.

Written by the indexing model from the issue text.