Install elpa-load-relative by entering the following commands in the terminal:
sudo apt update sudo apt install elpa-load-relative
Description:
relative file load (within a multi-file Emacs package)
This package provides functions which facilitate writing multi-file Emacs packages and facilitate running from the source tree without having to "install" code or fiddle with `load-path'.
Homepage: https://github.com/rocky/emacs-load-relative
Version: 1.3+repack-1
Section: universe/lisp