Unity 2019.2.11f1: Edit code in scripts of packages and keep it permanently?

Hello,

I downloaded the sprite shape 2d package through the package manager and am currently using it for my project.

I made some changes to one of the script of the package to make it suit my needs, but every time I restart unity, the changes I made in the script reset to the default code the package came with.

Am I doing something wrong or is it not possible to edit the code of packages in the way I am?

The path of the script I am editing is inside the project folder in:
\Library\PackageCache\com.unity.2d.spriteshape@2.1.0-preview.11\Runtime

 

As the name already suggests, the package cache is a cached version of a package which should always be the same everywhere the version of the package is imported. If you need to edit a script of a package, I think the best practice would be to create a git repo with the package and its changes, which you can import instead of the original asset.

If you're not familiar with git or working alone on the project without the need for others to access the package you can also link to a package on the disk


This package should be an own folder outsidde of any cache folder.