diff --git a/lisp/doom-editor.el b/lisp/doom-editor.el
index 2df2cbb66..80696ac35 100644
--- a/lisp/doom-editor.el
+++ b/lisp/doom-editor.el
@@ -250,8 +250,7 @@ tell you about it. Very annoying. This prevents that."
  auto-mode-alist
  '(("/LICENSE\\'" . text-mode)
    ("\\.log\\'" . text-mode)
-   ("rc\\'" . conf-mode)
-   ("\\.\\(?:hex\\|nes\\)\\'" . hexl-mode)))
+   ("rc\\'" . conf-mode)))
 
 
 ;;
diff --git a/lisp/doom-start.el b/lisp/doom-start.el
index c5b1d46b2..ce022d7cd 100644
--- a/lisp/doom-start.el
+++ b/lisp/doom-start.el
@@ -143,14 +143,8 @@
   (setq selection-coding-system 'utf-8))
 
 
-;;; Support for more file extensions
-;; Add support for additional file extensions.
-(dolist (entry '(("/\\.doom\\(?:rc\\|project\\|module\\|profile\\)\\'" . emacs-lisp-mode)
-                 ("/LICENSE\\'" . text-mode)
-                 ("\\.log\\'" . text-mode)
-                 ("rc\\'" . conf-mode)
-                 ("\\.\\(?:hex\\|nes\\)\\'" . hexl-mode)))
-  (push entry auto-mode-alist))
+;;; Support for Doom-specific file extensions
+(add-to-list 'auto-mode-alist '("/\\.doom\\(?:rc\\|project\\|module\\|profile\\)\\'" . emacs-lisp-mode))
 
 
 ;;
diff --git a/lisp/lib/files.el b/lisp/lib/files.el
index 8f03b4abe..6690820dc 100644
--- a/lisp/lib/files.el
+++ b/lisp/lib/files.el
@@ -484,17 +484,50 @@ If FORCE-P, overwrite the destination file if it exists, without confirmation."
                     file))))
 
 ;;;###autoload
-(defun doom/sudo-find-file (file)
-  "Open FILE as root."
-  (interactive "FOpen file as root: ")
-  ;; HACK: Disable auto-save in temporary tramp buffers because it could trigger
-  ;;   processes that hang silently in the background, making those buffers
-  ;;   inoperable for the rest of that session (Tramp caches them).
-  (let ((auto-save-default nil)
-        ;; REVIEW: use only these when we drop 28 support
-        (remote-file-name-inhibit-auto-save t)
-        (remote-file-name-inhibit-auto-save-visited t))
-    (find-file (doom--sudo-file-path (expand-file-name file)))))
+(defun doom/sudo-find-file (file &optional arg)
+  "Open FILE as root.
+
+This will prompt you to save the current buffer, unless prefix ARG is given, in
+which case it will save it without prompting."
+  (interactive
+   (list (read-file-name "Open file as root: ")
+         current-prefix-arg))
+  ;; HACK: Teach `save-place' to treat the new "remote" buffer as if it were
+  ;;   visiting the same local file (because it is), and preserve the cursor
+  ;;   position as usual.
+  (letf! ((defun remote-local-name (path)
+            (if path (or (file-remote-p path 'localname) path)))
+          (defmacro with-local-name (&rest body)
+            `(when save-place-mode
+               (let ((buffer-file-name (remote-local-name buffer-file-name))
+                     (default-directory (remote-local-name default-directory)))
+                 ,@body))))
+    (let ((window-start (window-start))
+          (buffer (current-buffer)))
+      (when (and buffer-file-name (file-equal-p buffer-file-name file))
+        (when (buffer-modified-p)
+          (save-some-buffers arg (lambda () (eq (current-buffer) buffer))))
+        (with-local-name (save-place-to-alist)))
+      (prog1
+          ;; HACK: Disable auto-save in temporary tramp buffers because it could
+          ;;   trigger processes that hang silently in the background, making
+          ;;   those buffers inoperable for the rest of that session (Tramp
+          ;;   caches them).
+          (let ((auto-save-default nil)
+                ;; REVIEW: use only these when we drop 28 support
+                (remote-file-name-inhibit-auto-save t)
+                (remote-file-name-inhibit-auto-save-visited t)
+                ;; Prevent redundant work
+                save-place-mode)
+            (find-file (doom--sudo-file-path (expand-file-name file))))
+        ;; Record of the cursor's old position if it isn't at BOB (indicating
+        ;; this buffer was already open), in case the user wishes to go to it.
+        (unless (bobp)
+          (doom-set-jump-h)
+          ;; save-place-find-file-hook requires point be a BOB to do its thang.
+          (goto-char (point-min)))
+        (with-local-name (save-place-find-file-hook))
+        (set-window-start nil window-start)))))
 
 ;;;###autoload
 (defun doom/sudo-this-file ()
@@ -528,9 +561,17 @@ If FORCE-P, overwrite the destination file if it exists, without confirmation."
 (defun doom/remove-recent-file (file)
   "Remove FILE from your recently-opened-files list."
   (interactive
-   (list (completing-read "Remove recent file: " recentf-list
+   (list (completing-read "Remove recent file: "
+                          (lambda (string predicate action)
+                            (if (eq action 'metadata)
+                                '(metadata
+                                  (display-sort-function . identity)
+                                  (cycle-sort-function . identity)
+                                  (category . file))
+                              (complete-with-action
+                               action recentf-list string predicate)))
                           nil t)))
-  (setq recentf-list (delete file recentf-list))
+  (setq recentf-list (delete (recentf-expand-file-name file) recentf-list))
   (recentf-save-list)
   (message "Removed %S from `recentf-list'" (abbreviate-file-name file)))
 
diff --git a/modules/completion/corfu/README.org b/modules/completion/corfu/README.org
index 68539e0c3..23e039487 100644
--- a/modules/completion/corfu/README.org
+++ b/modules/completion/corfu/README.org
@@ -220,6 +220,14 @@ To disable idle (as-you-type) completion, unset ~corfu-auto~:
   (setq corfu-auto nil))
 #+end_src
 
+** Turning off auto-completion
+To disable idle (as-you-type) completion, unset ~corfu-auto~:
+#+begin_src emacs-lisp
+;;; in $DOOMDIR/config.el
+(after! corfu
+  (setq corfu-auto nil))
+#+end_src
+
 ** Adding CAPFs to a mode
 To add other CAPFs on a mode-per-mode basis, put either of the following in your
 ~config.el~:
diff --git a/modules/completion/corfu/config.el b/modules/completion/corfu/config.el
index 0ac23185f..465f271e1 100644
--- a/modules/completion/corfu/config.el
+++ b/modules/completion/corfu/config.el
@@ -40,7 +40,8 @@ TAB/S-TAB.")
               ('aggressive
                (not (or (bound-and-true-p mct--active)
                         (bound-and-true-p vertico--input)
-                        (eq (current-local-map) read-passwd-map)
+                        (and (featurep 'auth-source)
+                             (eq (current-local-map) read-passwd-map))
                         (and (featurep 'helm-core) (helm--alive-p))
                         (and (featurep 'ido) (ido-active))
                         (where-is-internal 'minibuffer-complete
@@ -114,10 +115,10 @@ TAB/S-TAB.")
 (use-package! cape
   :defer t
   :init
-  (add-hook! prog-mode
+  (add-hook! 'prog-mode-hook
     (defun +corfu-add-cape-file-h ()
       (add-hook 'completion-at-point-functions #'cape-file -10 t)))
-  (add-hook! (org-mode markdown-mode)
+  (add-hook! '(org-mode-hook markdown-mode-hook)
     (defun +corfu-add-cape-elisp-block-h ()
       (add-hook 'completion-at-point-functions #'cape-elisp-block 0 t)))
   ;; Enable Dabbrev completion basically everywhere as a fallback.
@@ -126,8 +127,12 @@ TAB/S-TAB.")
     ;; Set up `cape-dabbrev' options.
     (defun +dabbrev-friend-buffer-p (other-buffer)
       (< (buffer-size other-buffer) +corfu-buffer-scanning-size-limit))
-    (add-hook! (prog-mode text-mode conf-mode comint-mode minibuffer-setup
-                          eshell-mode)
+    (add-hook! '(prog-mode-hook
+                 text-mode-hook
+                 conf-mode-hook
+                 comint-mode-hook
+                 minibuffer-setup-hook
+                 eshell-mode-hook)
       (defun +corfu-add-cape-dabbrev-h ()
         (add-hook 'completion-at-point-functions #'cape-dabbrev 20 t)))
     (after! dabbrev
diff --git a/modules/completion/vertico/config.el b/modules/completion/vertico/config.el
index a33944a38..a75d2c4eb 100644
--- a/modules/completion/vertico/config.el
+++ b/modules/completion/vertico/config.el
@@ -161,13 +161,16 @@ orderless."
   (consult-customize
    consult-ripgrep consult-git-grep consult-grep
    consult-bookmark consult-recent-file
-   +default/search-project +default/search-other-project
-   +default/search-project-for-symbol-at-point
-   +default/search-cwd +default/search-other-cwd
-   +default/search-notes-for-symbol-at-point
-   +default/search-emacsd
    consult--source-recent-file consult--source-project-recent-file consult--source-bookmark
    :preview-key "C-SPC")
+  (when (modulep! :config default)
+    (consult-customize
+     +default/search-project +default/search-other-project
+     +default/search-project-for-symbol-at-point
+     +default/search-cwd +default/search-other-cwd
+     +default/search-notes-for-symbol-at-point
+     +default/search-emacsd
+     :preview-key "C-SPC"))
   (consult-customize
    consult-theme
    :preview-key (list "C-SPC" :debounce 0.5 'any))
diff --git a/modules/editor/evil/packages.el b/modules/editor/evil/packages.el
index d4afb505e..bb6a67e7c 100644
--- a/modules/editor/evil/packages.el
+++ b/modules/editor/evil/packages.el
@@ -1,7 +1,7 @@
 ;; -*- no-byte-compile: t; -*-
 ;;; editor/evil/packages.el
 
-(package! evil :pin "88d073c9d03ca223564e7e8589f44ecc87c98153")
+(package! evil :pin "0251080640e0da6f0eec2b7d8dd70e9c9b9915d7")
 (package! evil-args :pin "a8151556f63c9d45d0c44c8a7ef9e5a542f3cdc7")
 (package! evil-easymotion :pin "f96c2ed38ddc07908db7c3c11bcd6285a3e8c2e9")
 (package! evil-embrace :pin "3081d37811b6a3dfaaf01d578c7ab7a746c6064d")
@@ -35,4 +35,4 @@
     (package! neotree)
     (autoload 'neotree-make-executor "neotree" nil nil 'macro))
 
-  (package! evil-collection :pin "e0982fcbb6f1694b27074565553fac0e736a30b4"))
+  (package! evil-collection :pin "ca977acb83c0dd01fc57dbc6f3d3111e89f4ec9d"))
diff --git a/modules/emacs/vc/config.el b/modules/emacs/vc/config.el
index 3ea79365c..d0a4f2190 100644
--- a/modules/emacs/vc/config.el
+++ b/modules/emacs/vc/config.el
@@ -28,10 +28,13 @@
         "k" #'log-view-msg-prev))
 
 
-(after! vc-annotate
+(after! vc
   (set-popup-rules!
-    '(("^\\*vc-diff" :select nil)   ; *vc-diff*
-      ("^\\*vc-change" :select t))) ; *vc-change-log*
+    '(("^\\*vc-diff" :select nil :size '+popup-shrink-to-fit)
+      ("^\\*vc-change-log" :select t))))
+
+
+(after! vc-annotate
   (set-evil-initial-state! 'vc-annotate-mode 'normal)
 
   ;; Clean up after itself
diff --git a/modules/email/mu4e/autoload/email.el b/modules/email/mu4e/autoload/email.el
index 336ed40f1..f9efcbf74 100644
--- a/modules/email/mu4e/autoload/email.el
+++ b/modules/email/mu4e/autoload/email.el
@@ -33,8 +33,11 @@ default/fallback account."
                     :enter-func
                     (lambda () (mu4e-message "Switched to %s" label))
                     :leave-func
-                    (lambda () (progn (setq +mu4e-personal-addresses nil)
-                                      (mu4e-clear-caches)))
+                    (lambda ()
+                      (setq +mu4e-personal-addresses nil)
+                      ;; REVIEW: `mu4e-clear-caches' was removed in 1.12.2, but
+                      ;;   may still be useful to users on older versions.
+                      (if (fboundp 'mu4e-clear-caches) (mu4e-clear-caches)))
                     :match-func
                     (lambda (msg)
                       (when msg
diff --git a/modules/lang/factor/autoload.el b/modules/lang/factor/autoload.el
new file mode 100644
index 000000000..c61098fe1
--- /dev/null
+++ b/modules/lang/factor/autoload.el
@@ -0,0 +1,8 @@
+;;; lang/factor/autoload.el -*- lexical-binding: t; -*-
+
+;;;###autoload
+(defun +factor/open-repl ()
+  "Open the Factor Listener."
+  (interactive)
+  (call-interactively #'run-factor)
+  (current-buffer))
diff --git a/modules/lang/factor/config.el b/modules/lang/factor/config.el
index 4f89a79e4..f863f27a4 100644
--- a/modules/lang/factor/config.el
+++ b/modules/lang/factor/config.el
@@ -5,73 +5,79 @@
   :init
   (after! factor-mode
     (set-eval-handler! 'factor-mode #'fuel-eval-region)
-    (set-repl-handler! 'factor-mode #'run-factor))
+    (set-repl-handler! 'factor-mode #'+factor/open-repl
+      :persist t
+      :send-region #'fuel-eval-region
+      :send-buffer #'fuel-run-file)
+    (set-lookup-handlers! 'factor-mode
+      :definition #'fuel-edit-word-at-point
+      :references #'fuel-show-callers
+      :documentation #'fuel-help)
+    (map! :map factor-mode-map
+          :localleader
+          "t" #'fuel-test-vocab
+          "F" #'fuel-run-file
+          "f" #'run-factor
+          "a" #'fuel-refresh-all
+          "L" #'fuel-load-usings
+          "u" #'fuel-vocab-usage
+          "U" #'fuel-vocab-uses
+          (:prefix ("c" . "change")
+           "w" #'fuel-edit-word-at-point
+           "d" #'fuel-edit-word-doc-at-point
+           "v" #'fuel-edit-vocabulary)
+          (:prefix ("e" . "eval")
+           "d" #'fuel-eval-definition
+           "R" #'fuel-eval-extended-region
+           "r" #'fuel-eval-region)
+          (:prefix ("h" . "help")
+           "p" #'fuel-apropos
+           "h" #'fuel-help
+           "b" #'fuel-help-display-bookmarks
+           "v" #'fuel-help-vocab
+           "w" #'fuel-show-file-words
+           "c" #'fuel-show-callees
+           "e" #'fuel-stack-effect-region
+           "s" #'fuel-stack-effect-sexp)
+          (:prefix ("s" . "scaffold")
+           "v" #'fuel-scaffold-vocab
+           "h" #'fuel-scaffold-help
+           "t" #'fuel-scaffold-tests)
+          (:prefix ("r" . "refactor")
+           "s" #'fuel-refactor-extract-sexp
+           "w" #'fuel-refactor-extract-region
+           "v" #'fuel-refactor-extract-vocab
+           "i" #'fuel-refactor-inline-word
+           "g" #'fuel-refactor-make-generic
+           "u" #'fuel-update-usings
+           "r" #'fuel-refactor-rename-word)))
   :config
-  (set-lookup-handlers! 'factor-mode
-    :definition #'fuel-edit-word-at-point
-    :references #'fuel-show-callers
-    :documentation #'fuel-help))
+  (set-popup-rules!
+    '(("^\\*fuel \\(debug\\|xref\\|messages\\)\\*$" :slot 1 :vslot -1)
+      ("^\\*fuel help\\*$" :slot 2 :vslot 2 :select t :size 0.35)
+      ("^\\*fuel listener\\*$" :size 0.3 :quit nil :ttl nil)))
 
-(map! :after fuel-help
-      :map fuel-help-mode-map
-      :localleader
-      "e" #'fuel-help-edit
-      "d" #'fuel-help-delete-bookmark
-      "B" #'fuel-help-display-bookmarks
-      "n" #'fuel-help-next
-      "d" #'fuel-help-kill-page
-      "p" #'fuel-help-previous
-      "b" #'fuel-help-bookmark-page
-      "e" #'fuel-help-edit)
+  (map! :after fuel-help
+        :map fuel-help-mode-map
+        :localleader
+        "e" #'fuel-help-edit
+        "d" #'fuel-help-delete-bookmark
+        "B" #'fuel-help-display-bookmarks
+        "n" #'fuel-help-next
+        "d" #'fuel-help-kill-page
+        "p" #'fuel-help-previous
+        "b" #'fuel-help-bookmark-page
+        "e" #'fuel-help-edit)
 
-(map! :after factor-mode
-      :map factor-mode-map
-      :localleader
-      "t" #'fuel-test-vocab
-      "F" #'fuel-run-file
-      "f" #'run-factor
-      "a" #'fuel-refresh-all
-      "L" #'fuel-load-usings
-      "u" #'fuel-vocab-usage
-      "U" #'fuel-vocab-uses
-      (:prefix ("c" . "change")
-       "w" #'fuel-edit-word-at-point
-       "d" #'fuel-edit-word-doc-at-point
-       "v" #'fuel-edit-vocabulary)
-      (:prefix ("e" . "eval")
-       "d" #'fuel-eval-definition
-       "R" #'fuel-eval-extended-region
-       "r" #'fuel-eval-region)
-      (:prefix ("h" . "help")
-       "p" #'fuel-apropos
-       "h" #'fuel-help
-       "b" #'fuel-help-display-bookmarks
-       "v" #'fuel-help-vocab
-       "w" #'fuel-show-file-words
-       "c" #'fuel-show-callees
-       "e" #'fuel-stack-effect-region
-       "s" #'fuel-stack-effect-sexp)
-      (:prefix ("s" . "scaffold")
-       "v" #'fuel-scaffold-vocab
-       "h" #'fuel-scaffold-help
-       "t" #'fuel-scaffold-tests)
-      (:prefix ("r" . "refactor")
-       "s" #'fuel-refactor-extract-sexp
-       "w" #'fuel-refactor-extract-region
-       "v" #'fuel-refactor-extract-vocab
-       "i" #'fuel-refactor-inline-word
-       "g" #'fuel-refactor-make-generic
-       "u" #'fuel-update-usings
-       "r" #'fuel-refactor-rename-word))
+  (map! :after fuel-listener
+        :map fuel-listener-mode-map
+        :localleader
+        "b" #'fuel-switch-to-buffer
+        "w" #'fuel-switch-to-buffer-other-window
+        "f" #'fuel-switch-to-buffer-other-frame
+        "e" #'fuel-edit-vocabulary
+        "r" #'fuel-refresh-all
+        "i" #'fuel-stack-mode
+        "h" #'fuel-help
+        "s" #'fuel-scaffold-vocab))
 
-(map! :after fuel-listener
-      :map fuel-listener-mode-map
-      :localleader
-      "b" #'fuel-switch-to-buffer
-      "w" #'fuel-switch-to-buffer-other-window
-      "f" #'fuel-switch-to-buffer-other-frame
-      "e" #'fuel-edit-vocabulary
-      "r" #'fuel-refresh-all
-      "i" #'fuel-stack-mode
-      "h" #'fuel-help
-      "s" #'fuel-scaffold-vocab)
diff --git a/modules/lang/factor/packages.el b/modules/lang/factor/packages.el
index f6b4aff31..55ec98480 100644
--- a/modules/lang/factor/packages.el
+++ b/modules/lang/factor/packages.el
@@ -1,4 +1,4 @@
 ;; -*- no-byte-compile: t; -*-
 ;;; lang/factor/packages.el
 
-(package! fuel :pin "23fcfc70753abbbdc0e86af06330d63da6e4ea64")
+(package! fuel :pin "12fc9d5071e46cac7b558204db5f4f09ea56e9c7")
diff --git a/modules/lang/julia/README.org b/modules/lang/julia/README.org
index 38e019278..97f8094b6 100644
--- a/modules/lang/julia/README.org
+++ b/modules/lang/julia/README.org
@@ -20,22 +20,23 @@ This module adds support for [[https://julialang.org/][the Julia language]] to D
 - +tree-sitter ::
   Leverages tree-sitter for better syntax highlighting and structural text
   editing. Requires [[doom-module::tools tree-sitter]].
-- +snail :: Use Snail, a development environment and REPL interaction package
-  for Julia in the spirit of Common Lisp’s SLIME and Clojure’s CIDER. It enables
-  convenient and dynamic REPL-driven development.
+- +snail ::
+  Use Snail, a development environment and REPL interaction package for Julia in
+  the spirit of Common Lisp’s SLIME and Clojure’s CIDER. It enables convenient
+  and dynamic REPL-driven development.
 
 ** Packages
 - [[doom-package:julia-mode]]
 - [[doom-package:julia-repl]]
-- if [[doom-package:+lsp]]
+- if [[doom-module:+lsp]]
   - if [[doom-module::tools lsp]]
     - [[doom-package:lsp-julia]]
     - [[doom-package:lsp]]
   - if [[doom-module::tools lsp +eglot]]
     - [[doom-package:eglot-jl]]
     - [[doom-package:eglot]]
-- if [[doom-package:][+snail]]
-  - [[doom-package:][julia-snail]]
+- if [[doom-module:+snail]]
+  - [[doom-package:julia-snail]]
 
 ** Hacks
 /No hacks documented for this module./
@@ -63,8 +64,8 @@ Pkg.add("LanguageServer")
 Pkg.add("SymbolServer")
 #+end_src
 
-Then configure [[doom-package:lsp-julia]] or [[doom-package:eglot-jl]] depending on whether you have enabled
-[[doom-module::tools lsp]] or [[doom-module::tools lsp +eglot]], respectively:
+Then configure [[doom-package:lsp-julia]] or [[doom-package:eglot-jl]] depending on whether you have enabled [[doom-module::tools
+lsp]] or [[doom-module::tools lsp +eglot]], respectively:
 
 *** =lsp-julia=
 To instruct [[doom-package:lsp-julia]] not to use the built-in package:
diff --git a/modules/lang/julia/config.el b/modules/lang/julia/config.el
index 657574431..df34a47ae 100644
--- a/modules/lang/julia/config.el
+++ b/modules/lang/julia/config.el
@@ -53,7 +53,8 @@
   :hook (+julia-repl-start . +julia-override-repl-escape-char-h)
   :hook (+julia-repl-start . julia-repl-use-emacsclient)
   :config
-  (set-popup-rule! "^\\*julia.*\\*$" :ttl nil)
+  (unless (modulep! +snail)
+    (set-popup-rule! "^\\*julia.*\\*$" :ttl nil))
 
   (when (modulep! :ui workspaces)
     (defadvice! +julia--namespace-repl-buffer-to-workspace-a (&optional executable-key suffix)
diff --git a/modules/lang/rust/config.el b/modules/lang/rust/config.el
index 9ed0483e3..1418ff530 100644
--- a/modules/lang/rust/config.el
+++ b/modules/lang/rust/config.el
@@ -48,7 +48,36 @@
           (if (modulep! :tools lsp +eglot)
               'eglot
             'lsp-mode))
-    (add-hook 'rustic-mode-local-vars-hook #'rustic-setup-lsp 'append))
+    (add-hook 'rustic-mode-local-vars-hook #'rustic-setup-lsp 'append)
+
+    ;; HACK: Add @scturtle fix for signatures on hover on LSP mode. This code
+    ;;   has not been upstreamed because it depends on the exact format of the
+    ;;   response of Rust Analyzer, which is not stable enough for `lsp-mode'
+    ;;   maintainers (see emacs-lsp/lsp-mode#1740).
+    (unless (modulep! :tools lsp +eglot)
+      (defadvice! +rust--dont-cache-results-from-ra-a (fn &rest args)
+        :after #'lsp-eldoc-function
+        (when (derived-mode-p 'rust-mode 'rust-ts-mode)
+          (setq lsp--hover-saved-bounds nil)))
+
+      ;; extract and show short signature for rust-analyzer
+      (cl-defmethod lsp-clients-extract-signature-on-hover (contents (_server-id (eql rust-analyzer)))
+        (let* ((value (if lsp-use-plists (plist-get contents :value) (gethash "value" contents)))
+               (groups (--partition-by (s-blank? it) (s-lines (s-trim value))))
+               (mod-group (cond ((s-equals? "```rust" (car (-fifth-item groups))) (-third-item groups))
+                                ((s-equals? "```rust" (car (-third-item groups))) (-first-item groups))
+                                (t nil)))
+               (cmt (if (null mod-group) "" (concat " // " (cadr mod-group))))
+               (sig-group (cond ((s-equals? "```rust" (car (-fifth-item groups))) (-fifth-item groups))
+                                ((s-equals? "```rust" (car (-third-item groups))) (-third-item groups))
+                                (t (-first-item groups))))
+               (sig (->> sig-group
+                         (--drop-while (s-equals? "```rust" it))
+                         (--take-while (not (s-equals? "```" it)))
+                         (--map (s-replace-regexp "//.*" "" it))
+                         (--map (s-trim it))
+                         (s-join " "))))
+          (lsp--render-element (concat "```rust\n" sig cmt "\n```"))))))
 
   (when (modulep! +tree-sitter)
     (add-hook 'rustic-mode-local-vars-hook #'tree-sitter! 'append))
diff --git a/modules/lang/scala/packages.el b/modules/lang/scala/packages.el
index 38429ea89..18dabf4e2 100644
--- a/modules/lang/scala/packages.el
+++ b/modules/lang/scala/packages.el
@@ -1,7 +1,7 @@
 ;; -*- no-byte-compile: t; -*-
 ;;; lang/scala/packages.el
 
-(package! sbt-mode :pin "bcf8d6040021013430b39d6f6766ce1aab0b691a")
+(package! sbt-mode :pin "cc68728a6ef0600aad369157b3a2d0ce56afba9b")
 (package! scala-mode :pin "4c6d636b86e3bb1d95de819dc48dda92abdfbcf4")
 
 (when (and (modulep! +lsp)
diff --git a/modules/tools/eval/autoload/repl.el b/modules/tools/eval/autoload/repl.el
index c97ff82a2..4acafcb7f 100644
--- a/modules/tools/eval/autoload/repl.el
+++ b/modules/tools/eval/autoload/repl.el
@@ -50,7 +50,9 @@
 
 (defun +eval-repl-known-repls ()
   "Yield the available repl functions as a list of symbols."
-  (seq-uniq (mapcar (pcase-lambda (`(,mode ,fn . _)) (list mode fn)) +eval-repls)))
+  (cl-delete-duplicates
+   (mapcar (lambda! ((mode fn &rest _)) (list mode fn))
+           +eval-repls)))
 
 (defun +doom-pretty-mode-name (mode)
   "Convert a mode name into a variant nicer for human eyes."
@@ -82,15 +84,15 @@ human-readable variant of its associated major mode name."
 
 (defun +eval-repl-prompt ()
   "Prompt the user for the choice of a repl to open."
-  (let* ((knowns (mapcar (pcase-lambda (`(,mode ,fn)) (list (+doom-pretty-mode-name mode) fn))
+  (let* ((knowns (mapcar (lambda! ((mode fn)) (list (+doom-pretty-mode-name mode) fn))
                          (+eval-repl-known-repls)))
          (founds (mapcar (lambda (fn) (list (+eval-pretty-mode-name-from-fn fn) fn))
                          (+eval-repl-found-repls)))
-         (repls (seq-uniq (append knowns founds)))
-         (names (mapcar #'cl-first repls))
+         (repls (cl-delete-duplicates (append knowns founds)))
+         (names (mapcar #'car repls))
          (choice (or (completing-read "Open a REPL for: " names)
                      (user-error "Aborting"))))
-    (cl-second (assoc choice repls))))
+    (cadr (assoc choice repls))))
 
 (defun +eval-repl-from-major-mode ()
   "Fetch the repl associated with the current major mode, if there
@@ -103,8 +105,7 @@ is one."
 prompted for a repl choice, even if the major mode they're in
 already has a known one."
   (pcase-let* ((`(,fn ,plist) (+eval-repl-from-major-mode))
-               (fn (cond ((or prompt-p (not fn)) (+eval-repl-prompt))
-                         (t fn)))
+               (fn (if (or prompt-p (not fn)) (+eval-repl-prompt) fn))
                (region (when (use-region-p)
                          (buffer-substring-no-properties (region-beginning)
                                                          (region-end)))))
diff --git a/modules/tools/pdf/packages.el b/modules/tools/pdf/packages.el
index 2b0f7d81e..b80c837a0 100644
--- a/modules/tools/pdf/packages.el
+++ b/modules/tools/pdf/packages.el
@@ -1,5 +1,5 @@
 ;; -*- no-byte-compile: t; -*-
 ;;; tools/pdf/packages.el
 
-(package! pdf-tools :pin "93e74924517d39483b432d6c3c9b8f8b8f0eb50c")
+(package! pdf-tools :pin "a1048bceb2bd3f635437b0f2bfac27cae8c2dabc")
 (package! saveplace-pdf-view :pin "ee95460cd934080338f03a16f95b549577425216")
diff --git a/modules/ui/tabs/config.el b/modules/ui/tabs/config.el
index 66504fdef..f9b8af52d 100644
--- a/modules/ui/tabs/config.el
+++ b/modules/ui/tabs/config.el
@@ -1,5 +1,14 @@
 ;;; ui/tabs/config.el -*- lexical-binding: t; -*-
 
+(defcustom +tabs-buffer-update-groups-delay 0.1
+  "Minimum wait time (in seconds) before tab groups are recalculated."
+  :type 'float
+  :group 'doom)
+
+
+;;
+;;; Packages
+
 (use-package! centaur-tabs
   :hook (doom-first-file . centaur-tabs-mode)
   :init
@@ -20,7 +29,20 @@
     (defun +tabs-disable-centaur-tabs-mode-maybe-h ()
       "Disable `centaur-tabs-mode' in current buffer."
       (when (centaur-tabs-mode-on-p)
-        (centaur-tabs-local-mode)))))
+        (centaur-tabs-local-mode))))
+
+  ;; HACK: `centaur-tabs-buffer-update-groups' is both expensive and called too
+  ;;   frequently. There really is no reason to call it more than 10 times per
+  ;;   second, as buffers rarely change groups more frequently than that.
+  (let ((time (float-time)))
+    (defadvice! +tabs--rate-limit-buffer-update-groups-a (fn)
+      :around #'centaur-tabs-buffer-update-groups
+      (let ((now (float-time)))
+        (if-let ((buf (and (< now (+ time +tabs-buffer-update-groups-delay))
+                           (assq (current-buffer) centaur-tabs--buffers))))
+            (car (nth 2 buf))
+          (setq time now)
+          (funcall fn))))))
 
 
 ;; TODO tab-bar-mode (emacs 27)
diff --git a/modules/ui/workspaces/config.el b/modules/ui/workspaces/config.el
index 0fb223bf2..540c76977 100644
--- a/modules/ui/workspaces/config.el
+++ b/modules/ui/workspaces/config.el
@@ -84,9 +84,10 @@ stored in `persp-save-dir'.")
           ;; HACK Fix #319: the warnings buffer gets swallowed when creating
           ;;      `+workspaces-main', so display it ourselves, if it exists.
           (when-let (warnings (get-buffer "*Warnings*"))
-            (save-excursion
-              (display-buffer-in-side-window
-               warnings '((window-height . shrink-window-if-larger-than-buffer))))))))
+            (unless (get-buffer-window warnings)
+              (save-excursion
+                (display-buffer-in-side-window
+                 warnings '((window-height . shrink-window-if-larger-than-buffer)))))))))
     (defun +workspaces-init-persp-mode-h ()
       (cond (persp-mode
              ;; `uniquify' breaks persp-mode. It renames old buffers, which causes