it's a bit annoying, in a few cases we can't do anything with, for e.g., write(2) return value, like when we're in a signal handler, so it just adds noise to the build (and breaks it with -Werror)

Although `amused-web localhost 9090' can be used, it's a bad design to listen by default on all the addresses. If needed, `amused-web '*' 9090' can be used to make it listen on all the IPv4 and IPv6 addresses.