Rob,
I don't think the attached list is correct (in terms of script ordering, not in terms of the dependences). For example, every package requires _update_info_dir (to pull it in), but its postinstall script should be run *last*. In fact, that must have been the primary reason for the initial "_" in its name... If we run the scripts in topological order of package dependences, _update_info_dir will be run first, and will not pick up the info files from any other packages. Am I missing something here?
Yes:
File extraction completes before any postinstall script executes. So any info files just dropped in will be fine.
Rob