Like the title says. When installing this shader, it crashes outright when on macOS.

My Mac: 2021 16" MacBook Pro, M1 Pro (10c CPU, 16c GPU), 16GB unified memory; model number MK193LL/A

My installation: 1.21.7/fabric, running Iris (as well as Sodium, Lithium, and several other mods)

If this shader is not intended to work on Mac, please update the Modrinth/Github page to say so.

any updates ?

Unfortunately this is just an issue with MacOS as it does not support many shaders and other graphics related features. If I had to guess then the issue would be Solas’ colored lighting which is also not supported on Mac.