I'm only vaguely familiar with it, but Brad Fitzpatrick has a project called Camlistore [https://camlistore.org/ https://camlistore.org/]. Probably worth a loo

I'm only vaguely familiar with it, but Brad Fitzpatrick has a project called Camlistore [https://camlistore.org/ https://camlistore.org/]. Probably worth a look. It seems he's trying to tackle exactly these kinds of problems with that project.