04:26 <mkj[m]> trying to figure how to wrap a rust crate called from C on no_std. I'd like to have C pass a fixed buffer for the rust function to populate with a struct, so C needs a #define RUSTLIB_STRUCT_SIZE 400 etc to define the buffer. is there a way to generate those struct sizes in a rust crate build process? can't see anything obvious.

05:54 <barafael[m]> mkj: maybe take a look at cbindgen

05:56 <mkj[m]> I had a bit of a look, but it doesn't seem to do much with opaque structs

05:57 <mkj[m]> I think I can probably define some `pub const THING_SIZEOF: usize = core::mem::size_of::<Thing>();` and then objcopy them out of the library. kinda convoluted though

09:27 <Socke> is there any GPS navigation software for linux (not android)? I found navit but it looks kinda unmaintained... maybe something modern in rust? :)

13:09 <thejpster[m]> but why? Google Maps works on pretty much any platform, and is offered at an unbeatable price. The engineers on my car spent a lot of time and effort on their Tom Tom based navigation system, with an LTE modem to do real-time traffic. And it's just not as good as Google Maps over Car Play.

15:18 <therealprof[m]> <thejpster[m]> "but why? Google Maps works on..." <- I could give you a dozen reasons why... but I wouldn't want to go more off-topic than we already are.