Source: golang-ginkgo Version: 1.2.0-1 It failed to build on arm64:
https://buildd.debian.org/status/package.php?p=golang-ginkgo&suite=sid The error was: src/github.com/onsi/ginkgo/internal/remote/output_interceptor_unix.go:34: undefined: syscall.Dup2 src/github.com/onsi/ginkgo/internal/remote/output_interceptor_unix.go:35: undefined: syscall.Dup2 On arm64 there is no dup2 system call; there's only dup3: dup2(oldfd, newfd) is equivalent to dup3(oldfd, newfd, 0) unless oldfd == newfd. I don't know whether you can use dup3 on all the architectures you care about or whether there's a Go package that already provides a Dup2 wrapper that works on all architectures. If you're not interested in errors and don't care about the performance cost of an additional system call then you could probably just call Dup2 and Dup3: one will do what you want and the other won't do any damage even if both are implemented, as far as I can tell.
