One of the downsides of a single binding key space is that it can be extra work to place restrictions on code usage (e.g. if one feature shouldn't use bindings from another feature). For this we generally recommend using qualifier annotations that are restricted visibility or using an SPI plugin to enforce separation of code.

I can’t find any info about this SPI plugin. Can anyone point me where I can read about this?

I wrote an article on SPI plugin - particularly writing validations like this. https://arunkumar.dev/dagger-spi-building-custom-validations-for-dependency-graphs/ Example: https://github.com/arunkumar9t2/blog-resources/tree/master/dagger-spi-validations

Great, thank! 🙇