def METHOD_NAME(self) -> list[Requirement]:
    """
    Parse the configuration file for [blocklist]packages
    Returns
    -------
    list of packaging.requirements.Requirement
        For all PEP440 package specifiers
    """
    filtered_requirements: set[Requirement] = set()
    try:
        lines = self.blocklist["packages"]
        package_lines = lines.split("\n")
    except KeyError:
        package_lines = []
    for package_line in package_lines:
        package_line = package_line.strip()
        if not package_line or package_line.startswith("#"):
            continue
        requirement = Requirement(package_line)
        requirement.name = canonicalize_name(requirement.name)
        requirement.specifier.prereleases = True
        filtered_requirements.add(requirement)
    return list(filtered_requirements)