emacs: Add 'guix-any'.

* emacs/guix-utils.el (guix-any): New function.

emacs/guix-utils.el

@@ -215,6 +215,14 @@ accessed with KEYS."
      (while (re-search-forward ,regexp nil t)
        ,@body)))
 
+(defun guix-any (pred lst)
+  "Test whether any element from LST satisfies PRED.
+If so, return the return value from the successful PRED call.
+Return nil otherwise."
+  (when lst
+    (or (funcall pred (car lst))
+        (guix-any pred (cdr lst)))))
+
 
 ;;; Diff