Unable to login to registry

I am using this credentials store from my environment /usr/local/bin/docker-credential-desktop

upon trying to login an error is thrown that the credentials are not found. b'No stored credential for repo.example.com\n'

looking at the credential store.get() function it states it raises a credentials.StoreError on no existing credentials.

I think it should raise credentials.CredentialsNotFound so upon the python client.login() it can create these credentials and use them.

The get() function should return the same response for all various credential stores and not rely on everyone using docker-credential-pass as the credential store for this behavior to work as expected.

def get(self, server):
        """ Retrieve credentials for `server`. If no credentials are found,
            a `StoreError` will be raised.
        """
        if not isinstance(server, six.binary_type):
            server = server.encode('utf-8')
        data = self._execute('get', server)
        result = json.loads(data.decode('utf-8'))

        # docker-credential-pass will return an object for inexistent servers
        # whereas other helpers will exit with returncode != 0. For
        # consistency, if no significant data is returned,
        # raise CredentialsNotFound
        if result['Username'] == '' and result['Secret'] == '':
            raise errors.CredentialsNotFound(
                'No matching credentials in {}'.format(self.program)
            )

        return result

Start at the credential store get() function shown in the issue and trace how python client.login() handles missing credentials. Ensure missing credentials produce the same CredentialsNotFound behavior across credential stores, allowing login to create them; verify the existing credential-store behavior afterward.