Function main

src/ghstack/land.py:45–229

(
    pull_request: str,
    remote_name: str,
    github: ghstack.github.GitHubEndpoint,
    sh: ghstack.shell.Shell,
    github_url: str,
    *,
    force: bool = False,
)

def main(
    pull_request: str,
    remote_name: str,
    github: ghstack.github.GitHubEndpoint,
    sh: ghstack.shell.Shell,
    github_url: str,
    *,
    force: bool = False,
) -> None:

    # We land the entire stack pointed to by a URL.
    # Local state is ignored; PR is source of truth
    # Furthermore, the parent commits of PR are ignored: we always
    # take the canonical version of the patch from any given pr

    params = ghstack.github_utils.parse_pull_request(
        pull_request, sh=sh, remote_name=remote_name
    )
    default_branch = ghstack.github_utils.get_github_repo_info(
        github=github,
        sh=sh,
        repo_owner=params["owner"],
        repo_name=params["name"],
        github_url=github_url,
        remote_name=remote_name,
    )["default_branch"]

    needs_force = False
    try:
        protection = github.get(
            f"repos/{params['owner']}/{params['name']}/branches/{default_branch}/protection"
        )
        if not protection["allow_force_pushes"]["enabled"]:
            raise RuntimeError(
                """\
Default branch {default_branch} is protected, and doesn't allow force pushes.
ghstack land does not work.  You will not be able to land your ghstack; please
resubmit your PRs using the normal pull request flow.

See https://github.com/ezyang/ghstack/issues/50 for more details, or
to complain to the ghstack authors."""
            )
        else:
            needs_force = True
    except ghstack.github.NotFoundError:
        pass

    orig_ref, closed = lookup_pr_to_orig_ref_and_closed(
        github,
        owner=params["owner"],
        name=params["name"],
        number=params["number"],
    )

    if closed:
        raise RuntimeError("PR is already closed, cannot land it!")

    if sh is None: