Cross-compiling something for gokrazy will likely be a can of worms if it has a lot of C dependencies, which tend to be dynamically linked by default. There's no dynamic library loader on gokrazy, so you either need to add one yourself or get all those C deps (and their deps) to be statically compiled into your Go binary. Neither is a picnic, although maybe someone else has already done the work of figuring out how to set up a dynamic loader.