config-util.el

(let* ((config-dir user-emacs-directory)
       (config-file (expand-file-name ".config" config-dir)))
  (defmacro with-el-config (&rest body)
    `(let* ((__parsed-data__ ',(cdr (with-temp-buffer
                                      (insert-file-contents-literally config-file)
                                      (search-forward "load-with-config" nil t)
                                      (end-of-defun)
                                      (preceding-sexp))))
            (__load-file-name__ load-file-name)
            (__id__ ',(intern (file-relative-name
                               (file-name-sans-extension __load-file-name__)
                               config-dir)))
            (__data__ (cdr (assoc __id__ __parsed-data__))))
       (progn ,@body))))