How to support both Built-in and Universal render pipelines in my Asset Store package?

I am in process of releasing a VFX package on the Asset Store that contains custom shaders. How can I maintain support for projects that use either the Built-in or Universal render pipelines?

Thanks in advance!

 

If you are using ShaderGraph then I believe the latest beta has some support for BIRP, but I would recommend using AmplifyShader editor as it is vastly superior to ShaderGraph and can easily switch pipeline targets.
If you are hand writing your shaders then I would highly recommend taking a look at BetterShaders. It provides an extremely more elegant and flexible way to write shaders that are cross compatible between pipelines.

Lastly the author of BetterShaders also wrote a free tool that lets you pack your shaders into a single file to work across pipelines, I have not tried it yet so I don't know the technical or limitations but you can check it out at https://github.com/slipster216/ShaderPackager