FAQ

My code hangs, why?

There could be many different reasons. The common ones:

1. Avoid printing to stdout. Write to stderr via println(), or fmt.Fprintf(os.stderr, "...", ...). This is because gio.Emit() actually uses stdout to output data to stdin of the next step.
2. Use flag package, instead of using os.Args directly. Because Gleam invokes each executor via flag package. Multiple ways to parse arguments would cause confusion.