Clojurians Log v2

I installed the latest Emacs, and noticed one difference: warnings about missing ‘lexical-binding’ cookie So I updated my configs by adding the statement:

-*- lexical-binding: t -*-

But the check is also for the packages that I have installed. It is quite a few warnings, and I have failed to mute this type of warning (that appears on start up and when switching modes). My "patch" is currently to inject this statement into all .el files in the elpa directory (by using https://gist.github.com/DavidVujic/9735f40197a6c8d869d8bcde17be0abf), but that will only work as long as the package is unchanged. Another alternative is to make Pull Requests to the packages, but it is overwhelmingly many. Any ideas on how to solve this in a sustainable way? I know that it is only warnings, but it is very annoying to have these popping up.