Go a little wacky with my config :~)

init.el

@@ -1,15 +1,8 @@
-;;; init.el --- Perl 5 Emacs Configuration
+;;; init.el --- Rawley Fowler's Emacs Configuration
 ;;; Commentary:
-;;; A Perl 5 focused Emacs configuration, for the unix genie.
+;;; A simple Emacs configuration with Evil and Ivy, for Scala and Perl development.
-
-;;; Code:
-(server-start)
-
-;; -- Get Font Here --
-;; https://github.com/slavfox/Cozette/releases
-(add-to-list 'default-frame-alist '(font . "JetBrainsMono Nerd Font-16"))
-(add-to-list 'default-frame-alist (list '(width . 40) '(height . 40)))
 
+(add-to-list 'default-frame-alist '(font . "JetBrainsMono Nerd Font-13"))
 (setq
  backup-by-copying t ; don't clobber symlinks
  backup-directory-alist '(("." . "~/.saves")) ; don't litter my fs tree
@@ -33,7 +26,7 @@
 (global-display-line-numbers-mode 1)
 
 (defun set-exec-path-from-shell ()
-  "Set up Emacs' 'exec-path' and PATH environment."
+  "Set up Emacs' \='exec-path' and PATH environment."
   (interactive)
   (let ((path-from-shell (replace-regexp-in-string "[ \t\n]*$" "" (shell-command-to-string "$SHELL --login -i -c 'echo $PATH'"))))
     (setenv "PATH" path-from-shell)
@@ -42,76 +35,158 @@
 
 (add-to-list 'load-path "~/.emacs.d/extras")
 
-;; Packages
 (require 'package)
 
-(add-to-list 'package-archives '("gnu" . "https://elpa.gnu.org/packages/"))
+;; Add melpa to your packages repositories
-(add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/"))
+(add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/") t)
+
 (package-initialize)
 
-(defconst global/pkgs
+;; Install use-package if not already installed
-  '(dracula-theme
+(unless (package-installed-p 'use-package)
-    flycheck
+  (package-refresh-contents)
-    raku-mode
+  (package-install 'use-package))
-    web-mode
-    json-mode
-    yaml-mode
-    php-mode
-    dockerfile-mode
-    ctrlf
-    magit
-    centaur-tabs
-    evil
-    smex
-    tree-sitter
-    tree-sitter-langs))
-(when (not package-archive-contents)
-  (package-refresh-contents))
-(dolist (pkg global/pkgs)
-  (unless (package-installed-p pkg)
-    (package-install pkg)))
 
-;; General Configutations
+(require 'use-package)
-(global-flycheck-mode)
-(setq flycheck-perlcritic-severity 3)
 
-(require 'tree-sitter)
+;; Various modes
-(require 'tree-sitter-langs)
+(use-package raku-mode)
+(use-package web-mode)
+(use-package json-mode)
+(use-package php-mode)
+(use-package dockerfile-mode)
 
-(require 'ctrlf)
+;; Enable defer and ensure by default for use-package
-(ctrlf-mode +1)
+;; Keep auto-save/backup files separate from source code:  https://github.com/scalameta/metals/issues/1027
+(setq use-package-always-defer t
+      use-package-always-ensure t
+      backup-directory-alist `((".*" . ,temporary-file-directory))
+      auto-save-file-name-transforms `((".*" ,temporary-file-directory t)))
 
-(require 'ido)
+;; Enable scala-mode for highlighting, indentation and motion commands
-(ido-mode 1)
+(use-package scala-mode
+  :interpreter ("scala" . scala-mode))
 
-(require 'smex)
+;; Enable sbt mode for executing sbt commands
-(smex-initialize)
+(use-package sbt-mode
+  :commands sbt-start sbt-command
+  :config
+  ;; WORKAROUND: https://github.com/ensime/emacs-sbt-mode/issues/31
+  ;; allows using SPACE when in the minibuffer
+  (substitute-key-definition
+   'minibuffer-complete-word
+   'self-insert-command
+   minibuffer-local-completion-map)
+   ;; sbt-supershell kills sbt-mode:  https://github.com/hvesalai/emacs-sbt-mode/issues/152
+   (setq sbt:program-options '("-Dsbt.supershell=false")))
 
-(require 'centaur-tabs)
+;; Enable nice rendering of diagnostics like compile errors.
-(centaur-tabs-mode t)
+(use-package flycheck
-(global-set-key (kbd "C-<prior>") 'centaur-tabs-backward)
+  :init (global-flycheck-mode))
-(global-set-key (kbd "C-<next>") 'centaur-tabs-forward)
+
-(setq centaur-tabs-plain-icons t)
+(use-package lsp-mode
-(setq centaur-tabs-set-bar 'under)
+  ;; Optional - enable lsp-mode automatically in scala files
-(setq x-underline-at-descent-line t)
+  ;; You could also swap out lsp for lsp-deffered in order to defer loading
-(setq centaur-tabs-enable-key-bindings t)
+  :hook  (scala-mode . lsp)
-(centaur-tabs-change-fonts "JetBrainsMono Nerd Font" 140)
+         (lsp-mode . lsp-lens-mode)
+  :config
+  ;; Uncomment following section if you would like to tune lsp-mode performance according to
+  ;; https://emacs-lsp.github.io/lsp-mode/page/performance/
+  ;; (setq gc-cons-threshold 100000000) ;; 100mb
+  ;; (setq read-process-output-max (* 1024 1024)) ;; 1mb
+  ;; (setq lsp-idle-delay 0.500)
+  ;; (setq lsp-log-io nil)
+  ;; (setq lsp-completion-provider :capf)
+  (setq lsp-prefer-flymake nil)
+  ;; Makes LSP shutdown the metals server when all buffers in the project are closed.
+  ;; https://emacs-lsp.github.io/lsp-mode/page/settings/mode/#lsp-keep-workspace-alive
+  (setq lsp-keep-workspace-alive nil))
+
+;; Add metals backend for lsp-mode
+(use-package lsp-metals)
+
+;; Enable nice rendering of documentation on hover
+;;   Warning: on some systems this package can reduce your emacs responsiveness significally.
+;;   (See: https://emacs-lsp.github.io/lsp-mode/page/performance/)
+;;   In that case you have to not only disable this but also remove from the packages since
+;;   lsp-mode can activate it automatically.
+(use-package lsp-ui)
+
+;; lsp-mode supports snippets, but in order for them to work you need to use yasnippet
+;; If you don't want to use snippets set lsp-enable-snippet to nil in your lsp-mode settings
+;; to avoid odd behavior with snippets and indentation
+(use-package yasnippet)
+
+;; Use company-capf as a completion provider.
+;;
+;; To Company-lsp users:
+;;   Company-lsp is no longer maintained and has been removed from MELPA.
+;;   Please migrate to company-capf.
+(use-package company
+  :hook (scala-mode . company-mode)
+  :config
+  (setq lsp-completion-provider :capf))
+
+;; Posframe is a pop-up tool that must be manually installed for dap-mode
+(use-package posframe)
+
+;; Use the Debug Adapter Protocol for running tests and debugging
+(use-package dap-mode
+  :hook
+  (lsp-mode . dap-mode)
+  (lsp-mode . dap-ui-mode))
+
+(use-package counsel
+  :after ivy
+  :config (counsel-mode))
+
+(use-package ivy
+  :defer 0.1
+  :diminish
+  :bind (("C-c C-r" . ivy-resume)
+         ("C-x B" . ivy-switch-buffer-other-window))
+  :custom
+  (ivy-count-format "(%d/%d) ")
+  (ivy-use-virtual-buffers t)
+  :config (ivy-mode))
+
+(use-package ivy-rich
+  :after ivy
+  :custom
+  (ivy-virtual-abbreviate 'full
+                          ivy-rich-switch-buffer-align-virtual-buffer t
+                          ivy-rich-path-style 'abbrev)
+  :config
+  (ivy-set-display-transformer 'ivy-switch-buffer
+                               'ivy-rich-switch-buffer-transformer))
+
+(use-package swiper
+  :after ivy
+  :bind (("C-s" . swiper)
+         ("C-r" . swiper)))
+
+(use-package tree-sitter
+  :config
+  (add-hook 'cperl-mode-hook #'tree-sitter-hl-mode)
+  (add-hook 'scala-mode-hook #'tree-sitter-hl-mode)
+  (add-hook 'javascript-mode #'tree-sitter-hl-mode))
+
+(use-package tree-sitter-langs
+  :after tree-sitter)
 
-(require 'evil)
-(evil-mode 1)
 (defun save-and-kill-this-buffer ()
   "Save and kill buffer."
   (interactive)
-  (save-buffer)(kill-current-buffer))
+  (save-buffer)
-(evil-ex-define-cmd "wq" 'save-and-kill-this-buffer)
+  (kill-current-buffer))
 
-(defun kill-inner-word ()
+(use-package evil
-  "It's ciw from Vim."
+  :demand t
-  (interactive)
+  :init
-  (backward-word)
+  (evil-mode 1)
-  (kill-word 1))
+  :config
+  (evil-ex-define-cmd "wq" 'save-and-kill-this-buffer))
 
-;;; Language Specific Configurations
 ;; Perl
 (require 'perltidy) ; Thanks to https://github.com/zakame/perltidy.el
 (require 'perl-mode)
@@ -120,9 +195,8 @@
 (setq cperl-highlight-variables-indiscriminately t)
 (defalias 'perl-mode 'cperl-mode)
 (add-hook 'before-save-hook #'(lambda ()
-                              (when (or (eq major-mode 'perl-mode) (eq major-mode 'cperl-mode))
+                                (when (or (eq major-mode 'perl-mode) (eq major-mode 'cperl-mode))
-                                (perltidy-buffer))))
+                                  (perltidy-buffer))))
-(add-hook 'cperl-mode-hook #'tree-sitter-hl-mode)
 (setq cperl-indent-parens-as-block t)
 
 (eval-after-load 'cperl-mode
@@ -140,47 +214,19 @@
                          :slant       'italic
                          )
      ))
-(add-to-list 'auto-mode-alist '("\\.html.ep\\'" . web-mode)) ; Mojo templates
+(add-to-list 'auto-mode-alist '("\\.html.ep\\'" . web-mode))
-
-;; PHP
-(add-to-list 'auto-mode-alist '("\\.blade.php\\'" . web-mode))
-
-;; Keys
-(global-set-key (kbd "C-c C-c") #'kill-inner-word)
-(global-set-key (kbd "M-x") #'smex)
 
 (custom-set-variables
  ;; custom-set-variables was added by Custom.
  ;; If you edit it by hand, you could mess it up, so be careful.
  ;; Your init file should contain only one such instance.
  ;; If there is more than one, they won't work right.
- '(custom-enabled-themes '(dracula))
- '(custom-safe-themes
-   '("fe1c13d75398b1c8fd7fdd1241a55c286b86c3e4ce513c4292d01383de152cb7" default))
  '(delete-selection-mode nil)
- '(package-selected-packages '(raku-mode docker-compose-mode flycheck dracula-theme))
+ '(package-selected-packages
- '(safe-local-variable-values
+   '(evil-mode ivy-rich counsel dap-mode company yasnippet lsp-ui lsp-metals lsp-mode sbt-mode yaml-mode web-mode tree-sitter-langs spinner smex scala-mode s raku-mode php-mode markdown-mode magit lv json-mode ht flycheck evil dracula-theme dockerfile-mode ctrlf centaur-tabs)))
-   '((eval setq flycheck-perl-include-path
-           (add-to-list 'flycheck-perl-include-path
-                        (concat
-                         (expand-file-name
-                          (locate-dominating-file default-directory ".dir-locals.el"))
-                         "lib")))
-     (eval let
-           ((project-dir
-             (expand-file-name
-              (locate-dominating-file default-directory ".dir-locals.el"))))
-           (setq-local flycheck-perl-include-path
-                       (list
-                        (concat project-dir "lib")
-                        (concat project-dir "local/lib/perl5/")))))))
 (custom-set-faces
  ;; custom-set-faces was added by Custom.
  ;; If you edit it by hand, you could mess it up, so be careful.
  ;; Your init file should contain only one such instance.
  ;; If there is more than one, they won't work right.
  )
-
-(provide 'init)
-
-;;; init.el ends here.