Re: interference between package and exec-path values ?

[Eli Zaretskii]

> From: Jean-Christophe Helary <brandelune@gmail.com>
> Date: Sat, 20 Oct 2018 01:41:54 +0900
> 
> I am using the most recent master.
> 
> I am finding that having this line in my .emacs.el:
> 
> (setq exec-path (append "/usr/local/bin/" exec-path))
> 
> interferes with package to the point that I can't install anything.

Of course!  You are using 'append' incorrectly.  Evaluate

  (append "/usr/local/bin/" exec-path)

and you will see what kind of result this produces.