Comment 9 for bug 243830

It turns out that this isn't enough; I reproduced this while upgrading to Intrepid myself this morning. doc-base isn't guaranteed to be unpacked before packages that call install-docs. One possible answer would be to have perl-base Conflict with the pre-triggers version of install-docs, although I have a feeling we may be in for other problems here and should pay attention to what Debian is doing with perl.