bug#70357: 30.0.50; loadup.el, load nadvice before seq

[Eli Zaretskii <eliz@gnu.org>]

> Cc: 70357@debbugs.gnu.org
> Date: Fri, 12 Apr 2024 16:43:56 -0400
> From:  Stefan Monnier via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> > If a seq.elc exists, and we dump bootstrap-emacs.pdmp, and seq.el gets
> > loaded, then the cl-generic machinery will want to warn about the fact
> > that certain method stuff in seq.elc is already compiled. This warning
> > wants to use somethign from nadvice, and ultimately a recursive load
> > (warnings.el requires icons.el, which uses seq, which leads to a
> > warning, etc).
> 
> As a general rule, it's better (long term) to try and fix those circular
> dependencies by breaking the cycle.
> 
> Maybe we could tweak `cl-generic` so it calls the byte-compiler in a way
> that silences all the warnings?
> Also, I'm not sure loading `icons` is necessary batch mode, so maybe we
> could make that conditional.

Me, I don't think I understand the situation well enough.  How come
this doesn't happen each time Emacs is built, for example?  IOW,
there's something in the situation that triggers this that doesn't
happen "usually", and I don't understand from the description what
that its.  This first sentence:

> If a seq.elc exists, and we dump bootstrap-emacs.pdmp, and seq.el gets
> loaded, then the cl-generic machinery will want to warn about the fact
> that certain method stuff in seq.elc is already compiled.

lost me: why is that warning being emitted, if all we need is to load
seq.el during loadup?