Determines if this points to an actual artifact (e.g. a tarball) or if
        it points to an "abstract" thing like a path or a VCS location.

def is_artifact(self):
        # type: () -> bool
        """
        Determines if this points to an actual artifact (e.g. a tarball) or if
        it points to an "abstract" thing like a path or a VCS location.
        """
        from pipenv.patched.notpip._internal.vcs import vcs

        if self.scheme in vcs.all_schemes:
            return False

        return True