[lltx] Can luatex auto-run mkluatexfontdb ?

[Karl Berry]

I continue to think just throwing any hardwired set of directories into
the global texmf.cnf for all users of all tex's in all situations is
more likely to be harmful than helpful.

One thing that comes to mind is that we (that is, install-tl) could set,
not OSFONTDIR, but OSFONTDIR.lualatex.  Then the value couldn't affect
non-lualatex users.  and it would be a way to get experience with how
well these directories really work.

Hardwiring the directory list in luaotfload would achieve the same thing
and does not actually sound like a bad thing to me.  Do you already have
platform-specific code there?

    AFAIK, context just checks if OSFONTDIR is set, 

If you say so.  That wasn't my understanding from Hans, but I never
actually looked at what he did.  Indeed, maybe he just sets it personally.

karl