Using straight.el with Prelude: place in your .emacs.d/personal/preload folder

straight.el

;;; straight --- Use straight.el to manage packages with version control.
;;; Commentary:
;; straight.el allows git to track package versions, ensuring Emacs
;; stability and reversible package upgrades.
;;; Author: holocronweaver
;;; Created: 2018
;;; Code:
(let ((bootstrap-file (concat user-emacs-directory "straight/repos/straight.el/bootstrap.el"))
      (bootstrap-version 3))
  (unless (file-exists-p bootstrap-file)
    (with-current-buffer
        (url-retrieve-synchronously
         "https://raw.githubusercontent.com/raxod502/straight.el/develop/install.el"
         'silent 'inhibit-cookies)
      (goto-char (point-max))
      (eval-print-last-sexp)))
  (load bootstrap-file nil 'nomessage))

(setq straight-use-package-by-default t)
(when (not (eq system-type 'windows-nt))
  ;; MinGW / Msys does not have ssh-askpass, which
  ;; makes git clone with ssh fail.
  (setq straight-vc-git-default-protocol 'ssh))

(straight-register-package
 '(seq :repo "https://git.savannah.gnu.org/git/emacs/elpa.git" :files ("packages/seq/*.el")))

;; Obtain use-package, which is used to manage Emacs packages.
(straight-use-package 'use-package)
(add-to-list 'load-path "~/.emacs.d/straight/repos/use-package/")
(require 'use-package)
(message "Done with straight.el")

;;; straight.el ends here