For installing bob from source, there is a script provided here: https://gitlab.idiap.ch/bob/bob/blob/10e4995c5f68f79f2ddbba4feb4b1cc52880753c/doc/source.rst

In this script, 8 levels of bob packages are listed. While the first seven levels of packages install all bob packages in the latest versions, the last level, which only includes bob removes some of the previously installed packages and replaces them with older versions, which are pin-pointed in the bob package.

Is there any reason why the bob package is mentioned in the last stage? Wouldn't it make more sense to remove that?