IDE.org: try Rust-mode with Eglot instead of rustic with lsp-mode
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fschl
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a10cf26870
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IDE.org
68
IDE.org
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@ -15,10 +15,10 @@
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(package-install-selected-packages :noconfirm)
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#+end_src
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** Setup Rustic
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** Setup Rustic :noexport:
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This is borrowed from https://robert.kra.hn/posts/rust-emacs-setup/
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#+begin_src emacs-lisp
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#+begin_src emacs-lisp :tangle no
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(use-package rustic
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:ensure
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:bind (:map rustic-mode-map
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@ -50,8 +50,8 @@ This is borrowed from https://robert.kra.hn/posts/rust-emacs-setup/
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(add-hook 'before-save-hook 'lsp-format-buffer nil t))
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#+end_src
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** Setup LSP-mode and LSP-ui
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#+begin_src emacs-lisp
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** Setup LSP-mode and LSP-ui :noexport:
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#+begin_src emacs-lisp :tangle no
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(use-package lsp-mode
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:ensure
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:commands lsp
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@ -81,10 +81,68 @@ This is borrowed from https://robert.kra.hn/posts/rust-emacs-setup/
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(lsp-ui-doc-enable nil))
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#+end_src
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** Rust-Mode with Eglot
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inspired by [[https://unwoundstack.com/blog/emacs-as-a-rust-ide.html][unwoundstack.com > Blog > Emacs as Rust IDE]]
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#+begin_src lisp :tangle ./modules/fschl-ide.el
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(use-package smartparens :ensure t
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:config (require 'smartparens-rust))
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(defun sp1ff/rust/mode-hook ()
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"My rust-mode hook"
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(column-number-mode)
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(display-line-numbers-mode)
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(hs-minor-mode)
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(smartparens-mode)
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(define-key rust-mode-map "\C-ca" 'eglot-code-actions)
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(define-key rust-mode-map (kbd "C-<right>") 'sp-forward-slurp-sexp)
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(define-key rust-mode-map (kbd "C-<left>") 'sp-forward-barf-sexp)
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(define-key rust-mode-map (kbd "C-M-<right>") 'sp-backward-slurp-sexp)
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(define-key rust-mode-map (kbd "C-M-<left>") 'sp-backward-barf-sexp)
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(define-key rust-mode-map "\C-c>" 'hs-show-all)
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(define-key rust-mode-map "\C-c<" 'hs-hide-all)
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(define-key rust-mode-map "\C-c-" 'hs-toggle-hiding)
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(define-key rust-mode-map "\C-c+" 'hs-hide-level)
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(setq indent-tabs-mode nil
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tab-width 4
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c-basic-offset 4
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fill-column 100))
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(use-package rust-mode
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:ensure t
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:hook (rust-mode . sp1ff/rust/mode-hook)
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:config
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(let ((dot-cargo-bin (expand-file-name "~/.cargo/bin/")))
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(setq rust-rustfmt-bin (concat dot-cargo-bin "rustfmt")
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rust-cargo-bin (concat dot-cargo-bin "cargo")
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rust-format-on-save t)))
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(use-package clippy-flymake
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:vc (:url "https://git.sr.ht/~mgmarlow/clippy-flymake" :branch main)
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:hook (rust-mode . clippy-flymake-setup-backend))
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(defun clippy-flymake-manually-activate-flymake ()
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"Shim for working around eglot's tendency to suppress flymake backends."
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(add-hook 'flymake-diagnostic-functions #'eglot-flymake-backend nil t)
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(flymake-mode 1))
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;; `eglot' by default will suppress all other flymake backends than its own
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;; <https://github.com/joaotavora/eglot/issues/268> This workaround will
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;; add `flymake-clippy'
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(use-package eglot
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:ensure t
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:hook ((rust-mode . eglot-ensure)
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(eglot-managed-mode . clippy-flymake-manually-activate-flymake))
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:config
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(add-to-list 'eglot-stay-out-of 'flymake))
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#+end_src
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** Auto-completion
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lsp-mode integrates with company mode
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#+begin_src emacs-lisp
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#+begin_src emacs-lisp :tangle ./modules/fschl-ide.el
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(use-package company
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:ensure
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:custom
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@ -8,63 +8,57 @@
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(add-to-list 'package-selected-packages 'ob-rust)
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(package-install-selected-packages :noconfirm)
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(use-package rustic
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:ensure
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:bind (:map rustic-mode-map
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("M-j" . lsp-ui-imenu)
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("M-ö" . lsp-find-references)
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("C-c C-c l" . flycheck-list-errors)
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("C-c C-c a" . lsp-execute-code-action)
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("C-c C-c r" . lsp-rename)
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("C-c C-c q" . lsp-workspace-restart)
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("C-c C-c Q" . lsp-workspace-shutdown)
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("C-c C-c s" . lsp-rust-analyzer-status))
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(use-package smartparens :ensure t
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:config (require 'smartparens-rust))
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(defun sp1ff/rust/mode-hook ()
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"My rust-mode hook"
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(column-number-mode)
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(display-line-numbers-mode)
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(hs-minor-mode)
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(smartparens-mode)
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(define-key rust-mode-map "\C-ca" 'eglot-code-actions)
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(define-key rust-mode-map (kbd "C-<right>") 'sp-forward-slurp-sexp)
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(define-key rust-mode-map (kbd "C-<left>") 'sp-forward-barf-sexp)
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(define-key rust-mode-map (kbd "C-M-<right>") 'sp-backward-slurp-sexp)
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(define-key rust-mode-map (kbd "C-M-<left>") 'sp-backward-barf-sexp)
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(define-key rust-mode-map "\C-c>" 'hs-show-all)
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(define-key rust-mode-map "\C-c<" 'hs-hide-all)
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(define-key rust-mode-map "\C-c-" 'hs-toggle-hiding)
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(define-key rust-mode-map "\C-c+" 'hs-hide-level)
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(setq indent-tabs-mode nil
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tab-width 4
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c-basic-offset 4
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fill-column 100))
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(use-package rust-mode
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:ensure t
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:hook (rust-mode . sp1ff/rust/mode-hook)
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:config
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;; uncomment for less flashiness
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;; (setq lsp-eldoc-hook nil)
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;; (setq lsp-enable-symbol-highlighting nil)
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;; (setq lsp-signature-auto-activate nil)
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(let ((dot-cargo-bin (expand-file-name "~/.cargo/bin/")))
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(setq rust-rustfmt-bin (concat dot-cargo-bin "rustfmt")
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rust-cargo-bin (concat dot-cargo-bin "cargo")
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rust-format-on-save t)))
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;; comment to disable rustfmt on save
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(setq rustic-format-on-save t)
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(add-hook 'rustic-mode-hook 'rk/rustic-mode-hook))
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(use-package clippy-flymake
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:vc (:url "https://git.sr.ht/~mgmarlow/clippy-flymake" :branch main)
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:hook (rust-mode . clippy-flymake-setup-backend))
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(defun rk/rustic-mode-hook ()
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;; so that run C-c C-c C-r works without having to confirm, but don't try to
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;; save rust buffers that are not file visiting. Once
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;; https://github.com/brotzeit/rustic/issues/253 has been resolved this should
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;; no longer be necessary.
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(when buffer-file-name
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(setq-local buffer-save-without-query t))
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(add-hook 'before-save-hook 'lsp-format-buffer nil t))
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(defun clippy-flymake-manually-activate-flymake ()
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"Shim for working around eglot's tendency to suppress flymake backends."
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(add-hook 'flymake-diagnostic-functions #'eglot-flymake-backend nil t)
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(flymake-mode 1))
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(use-package lsp-mode
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:ensure
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:commands lsp
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:custom
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;; what to use when checking on-save. "check" is default, I prefer clippy
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(lsp-rust-analyzer-cargo-watch-command "clippy")
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(lsp-eldoc-render-all t)
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(lsp-idle-delay 0.6)
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;; enable / disable the hints as you prefer:
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(lsp-inlay-hint-enable t)
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;; These are optional configurations. See https://emacs-lsp.github.io/lsp-mode/page/lsp-rust-analyzer/#lsp-rust-analyzer-display-chaining-hints for a full list
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(lsp-rust-analyzer-display-lifetime-elision-hints-enable "skip_trivial")
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(lsp-rust-analyzer-display-chaining-hints t)
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(lsp-rust-analyzer-display-lifetime-elision-hints-use-parameter-names nil)
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(lsp-rust-analyzer-display-closure-return-type-hints t)
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(lsp-rust-analyzer-display-parameter-hints nil)
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(lsp-rust-analyzer-display-reborrow-hints nil)
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;; `eglot' by default will suppress all other flymake backends than its own
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;; <https://github.com/joaotavora/eglot/issues/268> This workaround will
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;; add `flymake-clippy'
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(use-package eglot
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:ensure t
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:hook ((rust-mode . eglot-ensure)
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(eglot-managed-mode . clippy-flymake-manually-activate-flymake))
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:config
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(add-hook 'lsp-mode-hook 'lsp-ui-mode))
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(use-package lsp-ui
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:ensure
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:commands lsp-ui-mode
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:custom
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(lsp-ui-peek-always-show t)
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(lsp-ui-sideline-show-hover t)
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(lsp-ui-doc-enable nil))
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(add-to-list 'eglot-stay-out-of 'flymake))
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(use-package company
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:ensure
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