Moving to Doom Emacs!

.emacs.d/modules/lang/rust/config.el

@@ -0,0 +1,64 @@
+;;; lang/rust/config.el -*- lexical-binding: t; -*-
+
+(after! projectile
+  (add-to-list 'projectile-project-root-files "Cargo.toml"))
+
+
+;;
+;;; Packages
+
+(use-package! rustic
+  :mode ("\\.rs$" . rustic-mode)
+  :commands rustic-run-cargo-command rustic-cargo-outdated
+  :config
+  (set-docsets! 'rustic-mode "Rust")
+
+  (setq rustic-indent-method-chain t
+        rustic-flycheck-setup-mode-line-p nil
+        ;; use :editor format instead
+        rustic-format-trigger nil
+        ;; REVIEW `rust-ordinary-lt-gt-p' is terribly expensive in large rust
+        ;;        buffers, so we disable it, but only for evil users, because it
+        ;;        affects `forward-sexp' and its ilk. See
+        ;;        https://github.com/rust-lang/rust-mode/issues/288.
+        rustic-match-angle-brackets (not (featurep! :editor evil))
+        ;; We use the superior default client provided by `lsp-mode', not the
+        ;; one rustic-mode sets up for us.
+        rustic-lsp-client nil)
+
+  (add-hook 'rustic-mode-hook #'rainbow-delimiters-mode)
+
+  (when (featurep! +lsp)
+    (add-hook 'rustic-mode-local-vars-hook #'lsp!))
+
+  (map! :map rustic-mode-map
+        :localleader
+        (:prefix ("b" . "build")
+          :desc "cargo audit"    "a" #'+rust/cargo-audit
+          :desc "cargo build"    "b" #'rustic-cargo-build
+          :desc "cargo bench"    "B" #'rustic-cargo-bench
+          :desc "cargo check"    "c" #'rustic-cargo-check
+          :desc "cargo clippy"   "C" #'rustic-cargo-clippy
+          :desc "cargo doc"      "d" #'rustic-cargo-doc
+          :desc "cargo fmt"      "f" #'rustic-cargo-fmt
+          :desc "cargo new"      "n" #'rustic-cargo-new
+          :desc "cargo outdated" "o" #'rustic-cargo-outdated
+          :desc "cargo run"      "r" #'rustic-cargo-run)
+        (:prefix ("t" . "cargo test")
+          :desc "all"          "a" #'rustic-cargo-test
+          :desc "current test" "t" #'rustic-cargo-current-test)))
+
+
+(use-package! racer
+  :unless (featurep! +lsp)
+  :hook (rustic-mode . racer-mode)
+  :init
+  ;; Fix #2132: `racer' depends on `rust-mode', which tries to modify
+  ;; `auto-mode-alist'. We make extra sure that doesn't stick, especially when a
+  ;; buffer is reverted, as it is after rustfmt is done wiht it.
+  (after! rust-mode
+    (setq auto-mode-alist (delete '("\\.rs\\'" . rust-mode) auto-mode-alist)))
+  :config
+  (set-lookup-handlers! 'rustic-mode
+    :definition '(racer-find-definition :async t)
+    :documentation '+rust-racer-lookup-documentation))