comparison mercurial/upgrade.py @ 39996:dbcb466d0065

localrepo: define storage backend in creation options (API)

We add an experimental config option to define the storage backend
for new repositories. By default, it uses "revlogv1," which maps to
the current and only modern supported repository format.

We add a "backend" creation option to control which backend to
use. It defaults to using the value from the config option.

newreporequirements() will now barf if it sees a "backend" value
that isn't "revlogv1." This forces extensions to monkeypatch the
function to handle requirements derivation for custom backends.

In order for this to "just work," we factored out obtaining the
default creation options into its own function and made callers
of newreporequirements() responsible for passing in valid data.
Without this, direct callers of newreporequirements() wouldn't
get the proper results.

Differential Revision: https://phab.mercurial-scm.org/D4791

39995:582676acaf6d

    # the requirement that control this format variant
    _requirement = None

    @staticmethod
    def _newreporequirements(ui):
        return localrepo.newreporequirements(ui)

    @classmethod
    def fromrepo(cls, repo):
        assert cls._requirement is not None
        return cls._requirement in repo.requirements

                            'requirement: %s') %
                          _(', ').join(sorted(blockedreqs)))

    # FUTURE there is potentially a need to control the wanted requirements via
    # command arguments or via an extension hook point.
    newreqs = localrepo.newreporequirements(repo.ui)
    newreqs.update(preservedrequirements(repo))

    noremovereqs = (repo.requirements - newreqs -
                   supportremovedrequirements(repo))
    if noremovereqs:

39996:dbcb466d0065

    # the requirement that control this format variant
    _requirement = None

    @staticmethod
    def _newreporequirements(ui):
        return localrepo.newreporequirements(
            ui, localrepo.defaultcreateopts(ui))

    @classmethod
    def fromrepo(cls, repo):
        assert cls._requirement is not None
        return cls._requirement in repo.requirements

                            'requirement: %s') %
                          _(', ').join(sorted(blockedreqs)))

    # FUTURE there is potentially a need to control the wanted requirements via
    # command arguments or via an extension hook point.
    newreqs = localrepo.newreporequirements(
        repo.ui, localrepo.defaultcreateopts(repo.ui))
    newreqs.update(preservedrequirements(repo))

    noremovereqs = (repo.requirements - newreqs -
                   supportremovedrequirements(repo))
    if noremovereqs: