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.emacs-scala.el
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.emacs-scala.el
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;;;; Scala
;;;; See: https://scalameta.org/metals/docs/editors/emacs
;; Enable scala-mode for highlighting, indentation and motion commands
(use-package scala-mode
:interpreter
("scala" . scala-mode))
;; Enable sbt mode for executing sbt commands
(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"))
)
;; Add Language Server Protocol support
(use-package lsp-mode
;; Optional - enable lsp-mode automatically in scala files
:hook (scala-mode . lsp)
(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))
;; 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)