LFW directories are non-standard
It appears that the directory structure for the LFW dataset is set to an idiap-specific location. By default, there is no relative path like this: https://gitlab.idiap.ch/bob/bob.bio.face/-/blob/ead8c069bafb4024dc15c5df7fdc878aec8bd5f0/bob/bio/face/database/lfw.py#L87
When downloading the images from the LFW web page, they get extracted into directories
lfw_funneled (for the funneled version). In my eyes it would be more sensible to used these directories instead, i.e., use
lfw when no annotation directory is specified, and use
lfw_funneled when annotations are provided.
Another way would be to have two distinct entries for
lfw-view2, such as
lfw-view2-aligned (funneled images and annotations) and
lfw-view2-raw (original images, use detectors).