Convert the package data into something usable
    by output_package_listing_columns.

def format_for_columns(pkgs, options):
    """
    Convert the package data into something usable
    by output_package_listing_columns.
    """
    running_outdated = options.outdated
    # Adjust the header for the `pip list --outdated` case.
    if running_outdated:
        header = ["Package", "Version", "Latest", "Type"]
    else:
        header = ["Package", "Version"]

    data = []
    if options.verbose >= 1 or any(dist_is_editable(x) for x in pkgs):
        header.append("Location")
    if options.verbose >= 1:
        header.append("Installer")

    for proj in pkgs:
        # if we're working on the 'outdated' list, separate out the
        # latest_version and type
        row = [proj.project_name, proj.version]

        if running_outdated:
            row.append(proj.latest_version)
            row.append(proj.latest_filetype)

        if options.verbose >= 1 or dist_is_editable(proj):
            row.append(proj.location)
        if options.verbose >= 1:
            row.append(get_installer(proj))

        data.append(row)

    return data, header