the slony1 build (configure, specifically) process requires one file installed by the postgres port. this patch fixes that dependency. you only notice it if you try to install slony1 without postgres already installed, which seems to be likely only on the package build cluster :-) Fix: patch databases/slony1/Makefile thusly:
Responsible Changed From-To: freebsd-ports-bugs->lawrance Grab
State Changed From-To: open->closed Committed, thanks!