Ask HN: Seeking the ultimate definitive guide to installing postgres on OSX

Usually whenever Postgres stops working I feel like I'm bumping around in a dark room in working to understand what is actually going on and a process to apply a fix myself.

A year ago I asked a question on stackoverflow as I was having problems with postgres, since then the question has had over 15,000 views.

If someone would be willing to write up a definitive guide explaining core concepts of why things go bad and how to diagnose these issues yourself I'm sure it will get lots of views.

http://stackoverflow.com/questions/12472988/postgres-could-not-connect-to-server-no-such-file-or-directory

[edit] Here is a more pithy discussion on the problem: http://blog.ringerc.id.au/2012/09/postgresql-packaging-on-mac-os-x-is-mess.html?m=1