Default partitions allocate only 1GB to /

[tetrahedra]

When installing OpenBSD, the default partition layout only allocates 1GB 
to / ... most of the disk space is allocated to /home.

Once you start installing packages, / quickly grows beyond 1GB, and it 
looks like even some large packages exceed the available space on their 
own:
        Error: /dev/sda1 on / is not large enough
Is there an easy fix for this that I'm missing somewhere, or is this a 
poorly chosen default?