"""
stage3 target, builds upon previous stage2/stage3 tarball
"""
# NOTE: That^^ docstring has influence catalyst-spec(5) man page generation.

from catalyst import log
from catalyst.base.stagebase import StageBase


class stage3(StageBase):
    """
    Builder class for a stage3 installation tarball build.
    """
    required_values = frozenset()
    valid_values = frozenset()

    def __init__(self, spec, addlargs):
        StageBase.__init__(self, spec, addlargs)

    def set_repos(self):
        StageBase.set_repos(self)
        if "repos" in self.settings:
            log.warning(
                'Using an overlay for earlier stages could cause build issues.\n'
                "If you break it, you buy it.  Don't complain to us about it.\n"
                "Don't say we did not warn you.")