Bump to brotzeit/rustic@c7cab3f

My rust advice can be simplified thanks to brotzeit/rustic#87 being
merged.

modules/lang/rust/config.el

@@ -48,21 +48,11 @@
           :desc "all"          "a" #'rustic-cargo-test
           :desc "current test" "t" #'rustic-cargo-current-test))
 
-  (defadvice! +rust--dont-install-packages-p (orig-fn &rest args)
-    :around #'rustic-setup-lsp
-    (cl-letf (;; `rustic-setup-lsp' uses `package-installed-p' to determine if
-              ;; lsp-mode/elgot are available. This breaks because Doom doesn't
-              ;; use package.el to begin with (and lazy loads it).
-              ((symbol-function #'package-installed-p)
-               (lambda (pkg)
-                 (require pkg nil t)))
-              ;; If lsp/elgot isn't available, it attempts to install lsp-mode
-              ;; via package.el. Doom manages its own dependencies so we disable
-              ;; that behavior.
-              ((symbol-function #'rustic-install-lsp-client-p)
-               (lambda (&rest _)
-                 (message "No LSP server running"))))
-      (apply orig-fn args))))
+  ;; If lsp/elgot isn't available, it attempts to install lsp-mode via
+  ;; package.el. Doom manages its own dependencies so we disable that behavior.
+  (defadvice! +rust--dont-install-packages-p (&rest _)
+    :override #'rustic-install-lsp-client-p
+    (message "No LSP server running")))
 
 
 (use-package! racer

modules/lang/rust/packages.el

@@ -1,6 +1,6 @@
 ;; -*- no-byte-compile: t; -*-
 ;;; lang/rust/packages.el
 
-(package! rustic :pin "a6b8cd8db8")
+(package! rustic :pin "c7cab3fbe6")
 (unless (featurep! +lsp)
   (package! racer :pin "a0bdf778f0"))