bug#68660: 29.2; ELPA: Wrong type argument w. multiple maintainers in package-menu-mode

[Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

>>> I can see several ways to "fix" this, but I think the simplest would be
> Would one of those several ways possibly include overriding the
> `package-desc-extras' :maintainer item scraped by `lm-maintainers' with
> a spec item from an elpa-packages entry? I see that support for a
> `:maintainer' keyword was recently added, but it appears to serve some
> other purpose. Anyway, I've attached a sketch of what I'm trying to
> describe, but I'm rather unfamiliar with this program.

Hmm... this requires manual work per package, and it drops support for
multiple maintainers altogether, so I'd rather not go there.  I was
thinking instead of making `:maintainer` hold only a single item (the
improper list thingy) and use `:maintainers` to hold the list of
maintainers when there's more than one, which would be more
backward compatible and would solve the problem for all packages.


        Stefan