due to 

```
 def __iter__(self):
        """
        Supply iter so one may construct dicts of EntryPoints easily.
        """
        return iter((self.name, self))
```

the default namedtuple asdict method is broken

instead of returning the fields, recursive objects are returned as 

```
(Pdb) v
EntryPoint(name='.git', value='setuptools_scm.git:parse', group='setuptools_scm.parse_scm')
(Pdb) v._asdict()
{'name': '.git', 'value': EntryPoint(name='.git', value='setuptools_scm.git:parse', group='setuptools_scm.parse_scm')}
(Pdb) type(v)
<class 'importlib.metadata.EntryPoint'>
(Pdb)