Replace straight.el with nix

init.el

@@ -47,26 +47,8 @@
 (add-hook 'lisp-mode-hook 'disable-tabs)
 (add-hook 'emacs-lisp-mode-hook 'disable-tabs)
 
-;;;; Packages (straight.el)
-
-(defvar bootstrap-version)
-(let ((bootstrap-file
-       (expand-file-name "straight/repos/straight.el/bootstrap.el" user-emacs-directory))
-      (bootstrap-version 6))
-  (unless (file-exists-p bootstrap-file)
-    (with-current-buffer
-	(url-retrieve-synchronously
-	 "https://raw.githubusercontent.com/radian-software/straight.el/develop/install.el"
-	 'silent 'inhibit-cookies)
-      (goto-char (point-max))
-      (eval-print-last-sexp)))
-  (load bootstrap-file nil 'nomessage))
-
-(setq straight-disable-native-compile t)
-
-;; Use-Package
-(straight-use-package 'use-package)
-(setq straight-use-package-by-default t)
+;; Packages
+(require 'use-package)
 
 ;; Evil (Vim Emulation)
 (use-package evil
@@ -118,8 +100,7 @@
   (add-hook 'prog-mode-hook #'ws-butler-mode))
 
 ;; Code folding
-(use-package ts-fold
-  :straight (ts-fold :type git :host github :repo "emacs-tree-sitter/ts-fold"))
+(use-package ts-fold)
 
 ;; Markdown
 (use-package markdown-mode