On Thu, Jun 16, 2022 at 8:29 AM Stefan Monnier <monnier@iro.umontreal.ca>
wrote:

> > +;;;###autoload
> > +(defun package-recompile (pkg)
> > +  "Byte-compile package PKG again.
> > +PKG should be either a symbol, the package name, or a `package-desc'
> > +object."
> > +  (interactive (list (intern (completing-read
> > +                              "Recompile package: "
> > +                              (mapcar #'symbol-name
> > +                                      (mapcar #'car package-alist))))))
> > +  (let ((pkg-desc (if (package-desc-p pkg)
> > +                      pkg
> > +                    (cadr (assq pkg package-alist)))))
> > +    ;; Delete the old .elc files to ensure that we don't inadvertently
> > +    ;; load them (in case they contain byte code/macros that are now
> > +    ;; invalid).
> > +    (dolist (elc (directory-files (package-desc-dir pkg-desc) t
> "\\.elc\\'"))
> > +      (delete-file elc))
> > +    (package--compile pkg-desc)))
>
> Thanks, Lars.  But note that there are packages with ELisp files in
> subdirectories (Hyperbole and Proof-General come to mind, tho I'm sure
> there are others) so we should work a bit harder than the above
> `directory-files`.
>
> The realgud family of packages employs a (single-file) package
load-relative to manage
a fairly large number of elisp files, including munging the feature symbol.

 Looking at my 1000+ package sample, I see the following appear to have more
mundane occurrences of elisp file in subdirectories:


   - all-the-icons
   - auctex
   - axiom-environment
   - ecb
   - elisp-benchmarks
   - elpy (.yas-setup.el)
   - ert-runner
   - irony (tests)
   - julia-snail
   - parser-generator (tests)
   - requirejs (.yas-compiled-snippets.el)
   - slime
   - sly
   - taxy (examples)
   - yasnippet-snippets (.yas-setup.el)