What's the dev experience been like? Do you feel like there is good editor support for debugging and such?
Even with the rather oldschool approach of echo/logging.nim usage, things tend to turn around quickly. I have not felt the need to be able to attach a debugger to the process, mostly because our architecture is very pluggable. Almost all events/interactions are on a message bus and can be hooked/handled individually.
Personally, I develop on Mac and it runs natively there the same as on Linux.
Windows binaries for the tooling releases I used to build with a cross-compiler, but more recently, GH actions looks attractive enough to take that role.
Edit: Sorry, could have been clearer. The build system is just running the binary directly via nim cpp -r in development, and for production it's nimble. The dockerfile is handcrafted, but of trivial complexity.
Despite doing a lot and having a lot of smaller moving parts, the mp infra is of moderate code size and build complexity is not a concern. The whole thing compiles in less than 5 minutes, and can be done with nimble (the package manager). We have a docker builder image that spits out the final production image containing the apps, and a docker-compose setup then runs those as needed.
Any kind of per-platform specifics are handled in nim itself (when defined(Linux): etc) and via nim.config/nims.nim, to link in platform libraries.