Not quite. Just to clarify the aim of the code I sent:

My proposal was to keep in plan9.ini just that part of /boot
that you consider configuration (venti.conf, fossil.conf mainly).
Otherwise, I keep /boot as it was, readonly, with all the tools in.
However, I'm putting the configuration for fs, fossil, and venti into
plan9.ini. (Now that the alternative is to put that in /boot).

I also thought of making /boot rw, but that would be much more clumsy that
putting the config somewhere else. When thinking about where to put it,
I considered that in fact I had to keep a plan9.ini everywhere, and I
just decided to put the config for the file server in that place too (instead
of adding a different place).