emacs/IDE.org

Setup Fschl Ide Configuration

• Basic configuration
  • Additional Packages
  • Rust-Mode with Eglot
  • Auto-completion
  • Inline stuff

Basic configuration

Additional Packages

  ;;; fschl-ide.el -- Fschl Crafted Emacs user customization file -*- lexical-binding: t; -*-
  ;; This file is generated from the .org-file with the same name. If you want to edit the
  ;; configuration, DO NOT edit this .el-file, edit .org, instead.

  (add-to-list 'package-selected-packages 'cargo)
  (add-to-list 'package-selected-packages 'rustic)
  (add-to-list 'package-selected-packages 'ob-rust)
  (add-to-list 'package-selected-packages 'ob-rust)
  (package-install-selected-packages :noconfirm)

Rust-Mode with Eglot

inspired by unwoundstack.com > Blog > Emacs as Rust IDE

(use-package smartparens :ensure t
  :config (require 'smartparens-rust))

(defun sp1ff/rust/mode-hook ()
  "My rust-mode hook"

  (column-number-mode)
  (display-line-numbers-mode)
  (hs-minor-mode)
  (smartparens-mode)
  (define-key rust-mode-map "\C-ca" 'eglot-code-actions)
  (define-key rust-mode-map (kbd "C-<right>")   'sp-forward-slurp-sexp)
  (define-key rust-mode-map (kbd "C-<left>")    'sp-forward-barf-sexp)
  (define-key rust-mode-map (kbd "C-M-<right>") 'sp-backward-slurp-sexp)
  (define-key rust-mode-map (kbd "C-M-<left>")  'sp-backward-barf-sexp)
  (define-key rust-mode-map "\C-c>" 'hs-show-all)
  (define-key rust-mode-map "\C-c<" 'hs-hide-all)
  (define-key rust-mode-map "\C-c-" 'hs-toggle-hiding)
  (define-key rust-mode-map "\C-c+" 'hs-hide-level)
  (setq indent-tabs-mode nil
        tab-width 4
        c-basic-offset 4
        fill-column 100))

(use-package rust-mode
  :ensure t
  :hook (rust-mode . sp1ff/rust/mode-hook)
  :config
  (let ((dot-cargo-bin (expand-file-name "~/.cargo/bin/")))
    (setq rust-rustfmt-bin (concat dot-cargo-bin "rustfmt")
          rust-cargo-bin (concat dot-cargo-bin "cargo")
          rust-format-on-save t)))

(use-package clippy-flymake
  :vc (:url "https://git.sr.ht/~mgmarlow/clippy-flymake" :branch main)
  :hook (rust-mode . clippy-flymake-setup-backend))

(defun clippy-flymake-manually-activate-flymake ()
  "Shim for working around eglot's tendency to suppress flymake backends."
  (add-hook 'flymake-diagnostic-functions #'eglot-flymake-backend nil t)
  (flymake-mode 1))

;; `eglot' by default will suppress all other flymake backends than its own
;; <https://github.com/joaotavora/eglot/issues/268> This workaround will
;; add `flymake-clippy'
(use-package eglot
  :ensure t
  :hook ((rust-mode . eglot-ensure)
         (eglot-managed-mode . clippy-flymake-manually-activate-flymake))
  :config
  (add-to-list 'eglot-stay-out-of 'flymake))

Auto-completion

lsp-mode integrates with company mode

  (use-package company
  :ensure
  :custom
  (company-idle-delay 0.5) ;; how long to wait until popup
  ;; (company-begin-commands nil) ;; uncomment to disable popup
  :bind
  (:map company-active-map
	      ("C-n". company-select-next)
	      ("C-p". company-select-previous)
	      ("M-<". company-select-first)
	      ("M->". company-select-last)))

Inline stuff

hints and errors

  (use-package flycheck :ensure)
  (setq lsp-inlay-hint-enable t)