Rudy's OBTF

Other modes :)

(with-eval-after-load 'package
  (add-to-list 'package-selected-packages 'csv-mode)
  (add-to-list 'package-selected-packages 'json-mode))

Install a major mode for editing YAML (YAML Ain’t Markup Language).

(with-eval-after-load 'package
  (add-to-list 'package-selected-packages 'yaml-mode))