musl doesn't support NSS properly as far as I can see, and glibc won't support it when statically linked. So it's fine if you're running an app on a system or

musl doesn't support NSS properly as far as I can see, and glibc won't support it when statically linked. So it's fine if you're running an app on a system or a container where everything is in /etc/passwd, /etc/services, /etc/hosts etc. Meanwhile back in the real world people who need their applications to work for NSS sources other than any of those will probably stick to dynamically linking glibc.