Install elpa-helm-core by entering the following commands in the terminal:
sudo apt update sudo apt install elpa-helm-core
Description:
Emacs Helm library files
This package provides library Emacs Lisp files used by the elpa-helm package, and by Emacs Lisp addons that depend on Helm. . Please see the description & documentation for the elpa-helm package for more information.
Homepage: https://emacs-helm.github.io/helm/
Version: 2.8.8-1
Section: universe/lisp