> 1. Customize `load-prefer-newer` to t.
> 2. Edit project.el in-tree, save it, don't recompile Emacs.
> 3. Restart Emacs.
> 4. Visit some code file and try to launch `M-x eglot` there.
>
> You should get an error along the lines of:
>
>     require-with-check: Feature ‘project’ loaded from
>     ".../lisp/progmodes/project.el" is now provided by
>     ".../lisp/progmodes/project.elc"
>
> This error is spurious.  AFAICT, it is due to the fact that
> `require-with-check` uses `locate-file` to "guess" which file `load`
> would use, but `locate-file` doesn't obey `load-prefer-newer`, so it
> guesses wrong.

One approach is to expose the `prefer` option of `openp` to
`locate-file` so we can use it in `require-with-check`, as in the
patch below.


        Stefan