Move the treesitter language source list into the use-package block.

ansible/roles/emacs/files/lang-rust.el

@@ -44,6 +44,7 @@
   :init
   (add-to-list 'major-mode-remap-alist '(rust-mode . rust-ts-mode))
   :config
+  (add-to-list 'treesit-language-source-alist '(rust "https://github.com/tree-sitter/tree-sitter-rust"))
   (treesit-install-language-grammar 'rust)
   ;; Add keybindings for interacting with Cargo
   (use-package cargo

ansible/roles/emacs/files/util-tree-sitter.el

@@ -1,8 +1,3 @@
-(setq treesit-language-source-alist
-      '(
-        (rust "https://github.com/tree-sitter/tree-sitter-rust")
-        ))
-
 ;; Default to the max level of detail in treesitter highlighting. This
 ;; can be overridden in each language's use-package call with:
 ;;