Override init/1 to pass options into the rule macro

Is it possible to override the init function and make available those options into the rule macro?

Use case:

init/1 runs at compile time, and allows to set calculations into the options that cannot be computed in a module attribute definition. Lets say I want to compile some patterns in compile time using the :binary.compile_pattern(["some", "nice", "patterns"]) to later use them into some function. That cannot be done in a module attribute since it only support specific values easy to escape. Init would be the way to go then, but the options won't be available into the rule macro, and I don't won't to override also the call/2 function to assign those values into the conn, since that computation doesn't relate to the conn at all.

Thanks!

Start by reading the init/1, rule macro, and call/2 entry points described in the issue. Determine whether compile-time options can be made available to rule without assigning them through call/2; done means the supported behavior and its scope are clearly defined.