I see at this link how emacs prelude ensures that a set of packages is installed when emacs starts. I was wondering if I could somehow extend the variable prelude-packages to add some other packages, without changing the prelude-packages.el file?
Barring that I was wondering how I could define a list of packages that are installed at start-up if they aren't currently installed.
Prelude recommends to use
(prelude-require-packages '(some-package some-other-package))
if you have several package. Or in case you want to add just one package:
(prelude-require-package 'some-package)
If you want you can still maintain your package list in a variable:
(setq my-packages '(drupal-mode nginx-mode toto-mode)
(prelude-require-package my-packages)