Mac OS X has a nice extensible way to add things to your
PATH environment variable. Instead of saying adding this (from the macports install):
to your profile files, you can instead create a file in
/etc/paths.d/macports, with the contents:
(one path per line).
When a shell gets started, the global
evals the output of
/usr/libexec/path_helper, which reads those
path.d files in and makes a suitable
Nicely-made for automated scripting…
One thing to be aware of though, this puts the path.d paths at the end of the PATH, whereas macports' usual suggestion would put theirs at the start. I'll have to see how this works out…
It is, however, a great choice for things like postgres installs, and for anything else that doesn't come with the system (or when we'd prefer not to blat the system's version).