On Sun, Dec 07, 2003 at 01:07:58AM -0800, Michael Graff wrote:
  | Last time I brought this up (saying that 'postinstall-fix' should
  | work without an entire source tree present by putting the needed
  | bits in /usr/ somewhere) I got flamed and told I was wrong to want
  | this. I'm willing to change how I update my /etc, but checking out
  | the entire source tree on 12 machines is just silly.

Build the etc.tgz set (easy; "build.sh distribution sets").
Push that out, extract that to a temporary directory ("tmpdir"),
run "postinstall -s tmpdir" ...