bug#63916: 30.0.50; use-package: changes do not propagate to elpa-devel

[Stefan Monnier]

Hi,

> Instead of looking only at the git log of the main package file, we
> look instead at the git log of all files of the core package.
> This way, a new devel version is created when any other package file is
> changed, not just the main file.

It has a minor downside which is that it slows down the overwhelming
cases (where there are no changes), but it's probably lost in the noise,
so it sounds like a very good idea, thank you.

> Is this the right mailing list to send the patch?

Yes.

[ BTW, Philip's `list-ensure` is called `ensure-list` :-)
  And yes, I think it's OK to use functionality from Emacs-28.  ]

>+  (when-let
>+      ((core (elpaa--spec-get pkg-spec :core)))

AFAICT this code is only used when `:core` is non-nil, so better either
not test for it redundantly, or do it via `cl-assert`.

>+                    (unless (member item excludes)

The code looks generally good, but I'm not sure about the one line
above:
- I know it won't do the right thing for ERC's "lisp/erc/ChangeLog.*"
  but it's probably harmless (those files basically never change
  anyway).
- I have the impression that it won't do the right thing for
  `use-package`'s "bind-key.el"

Also, I see you do (concat item file) but you only know that `item` is
a directory, not that it ends with a `/`.  Better use `file-name-concat`.

Last but not least: I think this doesn't quite qualify as "trivial" so
we'd need you to sign the copyright paperwork (well, maybe with some of
the suggested simplifications, it could qualify as "trivial", but it's
easier if you sign the paperwork so we don't have to worry about it,
especially if you ever submit more code, which I hope you will).
To that end, please fill the form below and email it to the FSF as
instructed so they can send you the appropriate paperwork to sign.


        Stefan


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