It might be convenient to sort the members before adding them to the archive. That would make the outcome more predictable and would make it easier to find entries in the manifest. E.g. the following:
>>> archive = Archive("archive.tar", mode="x:", paths=["base/c", "base/a", "base/b"])
>>> [fi.path for fi in archive.manifest]
[PosixPath('base/c'), PosixPath('base/a'), PosixPath('base/b')]
should yield [PosixPath('base/a'), PosixPath('base/b'), PosixPath('base/c')] instead.
It might be convenient to sort the members before adding them to the archive. That would make the outcome more predictable and would make it easier to find entries in the manifest. E.g. the following:
should yield
[PosixPath('base/a'), PosixPath('base/b'), PosixPath('base/c')]instead.