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<loquatdev>I'm writing a program in C that uses Guile as a scripting language. How might I define an SRFI-9 record from C?

<ekaitz>loquatdev: the easy answwer is to eval a piece of scheme with that record

<loquatdev>Sure, that makes sense. I'm curious though, what would be the "manual" way to do it?

<ekaitz>loquatdev: the difficult answer is that records are internally `struct`s

<ekaitz>you can make guile structs from C, using:

<ekaitz>> C Function: SCM scm_make_struct (SCM vtable, SCM tail_size, SCM init_list)

<loquatdev>Alright, I'll look into it.

<ekaitz>loquatdev: good luck

<loquatdev>The reason I'm asking is because I'm evaluating a scheme file that will return a configuration value. I know I can just do an a-list but it seems like the "proper" way to do it would be to return a record/struct of some kind. Would I even need a record or is there a simpler / more idiomatic way to do that?

<loquatdev>I should not that the configuration will contain lambdas that will be called from C later on.

<loquatdev>*note

<ekaitz>it depends on what you'd like to do

<ekaitz>in some programs I take the config, `read` it and parse the list

<ekaitz>in some others you could do like guix does, evaluate the file, having some environment around the file

<ekaitz>meaning, you give the configuration a couple of record definitions, and make the user use them and return the values

<loquatdev>Yeah, I'm currently evaluating the file and using its return value from C.

<ekaitz>loquatdev: if you are doing that, defining a record and including that in the environment that evaluates the user's code is a good way to go

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2026-03-10.log