Fix some extra lang quirks and add Nim support

contrib/lang/extra-langs/packages.el

@@ -1,15 +1,16 @@
 (defvar extra-langs-packages
   '(
-    idris-mode
     arduino-mode
-    scad-mode
-    qml-mode
+    idris-mode
     julia-mode
+    nim-mode
     nix-mode
+    qml-mode
     racket-mode
-    yaml-mode
     rust-mode
+    scad-mode
     wolfram-mode
+    yaml-mode
     ))
 
 (defun extra-langs/init-arduino-mode ()
@@ -24,6 +25,9 @@
 (defun extra-langs/init-nix-mode ()
   (use-package nix-mode :defer t))
 
+(defun extra-langs/init-nim-mode ()
+  (use-package nim-mode :defer t))
+
 (defun extra-langs/init-qml-mode ()
   (use-package qml-mode :defer t))
 
@@ -34,7 +38,11 @@
   (use-package yaml-mode :defer t))
 
 (defun extra-langs/init-rust-mode ()
-  (use-package rust-mode :defer t))
+  (use-package rust-mode
+    :defer t
+    :config
+    (when (fboundp 'sp-local-pair) ; Don't pair lifetime specifiers
+      (sp-local-pair 'rust-mode "'" nil :actions nil))))
 
 ;; no associated extension because conflicts with more common Objective-C, manually invoke for .m files.
 (defun extra-langs/init-wolfram-mode ()
@@ -56,6 +64,11 @@
         "mt" 'racket-test
         "mg" 'racket-visit-definition
         "mhd" 'racket-doc)
+      ;; Bug exists in Racket company backend that opens docs in new window when
+      ;; company-quickhelp calls it. Note hook is appendended for proper ordering.
+      (when (configuration-layer/package-declaredp 'company-quickhelp)
+        (add-hook 'company-mode-hook
+                  '(lambda () (when (equal major-mode 'racket-mode) (company-quickhelp-mode -1))) t))
       (add-hook 'racket-mode-hook
                 '(lambda ()
                    (define-key racket-mode-map (kbd "H-r") 'racket-run))))))