Current Emacs Config

init.el

;; Define the init file
(setq custom-file (expand-file-name "custom.el" user-emacs-directory))
(when (file-exists-p custom-file) 
  (load custom-file))

;; Define and initialize package repositories
(require 'package)
(setq package-archives '(("melpa" . "http://melpa.org/packages/") 
			 ("gnu" . "http://elpa.gnu.org/packages/")))
(package-initialize)

(unless (package-installed-p 'use-package) 
  (package-refresh-contents) 
  (package-install 'use-package))
(require 'use-package)
(setq use-package-always-ensure 't)

;; Keyboard-centric user interface
(setq inhibit-startup-message t)
(tool-bar-mode -1)
(menu-bar-mode -1)
(scroll-bar-mode -1)
(defalias 'yes-or-no-p 'y-or-n-p)

;; Set line numbers
(add-hook 'prog-mode-hook 'display-line-numbers-mode)
(setq display-line-numbers-type 'relative)

;; Theme
(use-package 
  dracula-theme 
  :config (load-theme 'dracula t))

;; Set font
(add-to-list 'default-frame-alist '(font . "JetBrains Mono-12"))

;; enable ligatures
(use-package 
  ligature 
  :config
  ;; Enable all JetBrains Mono ligatures in programming modes
  (ligature-set-ligatures 'prog-mode '("-|" "-~" "---" "-<<" "-<" "--" "->" "->>" "-->" "///" "/="
				       "/==" "/>" "//" "/*" "*>" "***" "*/" "<-" "<<-" "<=>" "<="
				       "<|" "<||" "<|||" "<|>" "<:" "<>" "<-<" "<<<" "<==" "<<="
				       "<=<" "<==>" "<-|" "<<" "<~>" "<=|" "<~~" "<~" "<$>" "<$"
				       "<+>" "<+" "</>" "</" "<*" "<*>" "<->" "<!--" ":>" ":<" ":::"
				       "::" ":?" ":?>" ":=" "::=" "=>>" "==>" "=/=" "=!=" "=>" "==="
				       "=:=" "==" "!==" "!!" "!=" ">]" ">:" ">>-" ">>=" ">=>" ">>>"
				       ">-" ">=" "&&&" "&&" "|||>" "||>" "|>" "|]" "|}" "|=>" "|->"
				       "|=" "||-" "|-" "||=" "||" ".." ".?" ".=" ".-" "..<" "..."
				       "+++" "+>" "++" "[||]" "[<" "[|" "{|" "??" "?." "?=" "?:"
				       "##" "###" "####" "#[" "#{" "#=" "#!" "#:" "#_(" "#_" "#?"
				       "#(" ";;" "_|_" "__" "~~" "~~>" "~>" "~-" "~@" "$>" "^="
				       "]#"))
  ;; Enables ligature checks globally in all buffers. You can also do it
  ;; per mode with `ligature-mode'.
  (global-ligature-mode t))


(setq evil-want-keybinding nil)

;; Evil
(use-package 
  evil 
  :demand t 
  :init (setq evil-want-C-u-scroll t) 
  :bind (("<escape>" . keyboard-escape-quit)) 
  :config (evil-mode 1))

;; Evil everywhere
(use-package 
  evil-collection 
  :after evil 
  :config (setq evil-want-integration t) 
  (evil-collection-init))

;; all-the-icons
(use-package 
  all-the-icons 
  :if (display-graphic-p))

;; treemacs
(use-package 
  treemacs 
  :ensure t 
  :defer t 
  :bind (:map global-map
	      ("M-0"       . treemacs-select-window) 
	      ("C-x t 1"   . treemacs-delete-other-windows) 
	      ("C-x t t"   . treemacs) 
	      ("C-x t d"   . treemacs-select-directory) 
	      ("C-x t B"   . treemacs-bookmark) 
	      ("C-x t C-t" . treemacs-find-file) 
	      ("C-x t M-t" . treemacs-find-tag)))


;; treemacs evil
(use-package 
  treemacs-evil 
  :after (treemacs evil) 
  :ensure t)

;; treemacs all the icons
(use-package 
  treemacs-all-the-icons 
  :after (treemacs all-the-icons) 
  :config (treemacs-load-theme "all-the-icons") 
  :ensure t)


;; Performance opt
(setq gc-cons-threshold (* 1024 1024 100))
(setq read-process-output-max (* 1024 1024 3))

;; Lsp mode
(use-package 
  lsp-mode 
  :init
  ;; set prefix for lsp-command-keymap
  (setq lsp-keymap-prefix "C-c l") 
  :config (setq lsp-idle-delay 0.0) 
  :hook ((lsp-mode . lsp-enable-which-key-integration)) 
  ((go-mode) . lsp) 
  :commands lsp)


;; company mode
(use-package 
  company
  :ensure t
  :custom-face
  (company-tooltip-selection ((t (:background "black" :foreground "black"))))
  :config
  (setq company-idle-delay 0.0) 
  (setq company-minimum-prefix-length 0) 
  (global-company-mode t))

;; company box mode
;; (use-package 
;;   company-box 
;;   :hook (company-mode . company-box-mode))

;; flycheck
(use-package 
  flycheck 
  :ensure t 
  :init (global-flycheck-mode))

;; install elisp format
(use-package 
  elisp-format)


;; Install rustic
(use-package 
  rustic)

;; Install go support
(use-package 
  go-mode)
(add-hook 'go-mode-hook #'lsp-deferred)
(defun lsp-go-install-save-hooks () 
  (add-hook 'before-save-hook #'lsp-format-buffer t t) 
  (add-hook 'before-save-hook #'lsp-organize-imports t t))
(add-hook 'go-mode-hook #'lsp-go-install-save-hooks)


(use-package 
  tree-sitter 
  :config (add-to-list 'tree-sitter-major-mode-language-alist '(rustic-mode . rust)) 
  :hook ((python-mode rustic-mode go-mode) . tree-sitter-hl-mode))
(use-package 
  tree-sitter-langs 
  :init (global-tree-sitter-mode) 
  :after tree-sitter)

;; doomline
(use-package 
  doom-modeline 
  :ensure t 
  :hook (after-init . doom-modeline-mode))

;; Configure org mode
(global-set-key (kbd "C-c l") #'org-store-link)
(global-set-key (kbd "C-c a") #'org-agenda)
(global-set-key (kbd "C-c c") #'org-capture)

;; Which key
(use-package 
  which-key 
  :config (which-key-mode))