bug#34413: 27.0.50; package-quickstart feature breaks SLIME/SLY

[Stefan Monnier <monnier@IRO.UMontreal.CA>]

> When enabling the new package-quickstart feature SLIME or SLY fail to load
> with the following message:
>
> Debugger entered--Lisp error: (file-missing "Cannot open load file" "No such file or directory" "sly")
>   #<subr autoload-do-load>((autoload "sly" "Start a Lisp implementation and connect to it.\n\n  ..." t nil) sly nil)
>   apply(#<subr autoload-do-load> ((autoload "sly" "Start a Lisp implementation and connect to it.\n\n  ..." t nil) sly))
>   autoload-do-load((autoload "sly" "Start a Lisp implementation and connect to it.\n\n  ..." t nil) sly)
>   command-execute(sly)

So, IIUC the startup doesn't signal an error (hence appears to proceed
correctly) and the problem only appears when you later do `M-x sly` (or
equivalent)?

The above error suggests that the underlying problem may be that the
quickstart file failed to add the relevant directory to `load-path`.

I'll take a look at it.
In case it's relevant, could you say where you got those packages from?


        Stefan