bug#44270: 24.5; EMMS failures while installing

[Stefan Kangas]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> John Gilmore <gnu@toad.com> writes:
>
>> M-x list-packages
>> picked emms, hit Install.
>> I've included the *Compile-Log* buffer contents, which include one
>> error and several warnings.
>> Compiling file /gnu/home/.emacs.d/elpa/emms-6.0/emms-browser.el at Tue Oct 
>> 27 18:43:24 2020
>> emms-browser.el:292:1:Error: Cannot open load file: no such file or 
>> directory, seq
>
> It seems like EMMS requires seq, but that it's not installed in your
> Emacs?  My guess is that your Emacs (24.5) is too old to use EMMS.
>
> But EMMS should specify that, I guess?

Indeed, I think EMMS should add a dependency on seq:

    ;; Package-Requires: ((cl-lib "0.5") (seq "2.22"))

Perhaps it should add a dependency also on Emacs, but I don't know which
version it would need.

Yoni, could you please take a look at this?  This might warrant
releasing a new version of the package on GNU ELPA.