You can use the [Match] section in NixOS. For example a LAN config I have is setup like this. I could use regex instead of specifying the whole interface name such as enp*.

systemd.network = {
    networks."10-lan" = {
      matchConfig.Name = "enp1s0";

You can use the [Match] section in NixOS. For example a LAN config I have is setup like this. I could use regex instead of specifying the whole interface name such as matchConfig.Name = "enp*";.

systemd.network = {
    networks."10-lan" = {
      matchConfig.Name = "enp1s0";

You can use the [Match] section in NixOS. For example a LAN config I have is setup like this.

systemd.network = {
    networks."10-lan" = {
      matchConfig.Name = "enp*";

In reply to @hexa:lossy.network
getent hosts <container> works fwiw

Another person has walked this path before 😅 systemd/lib is in nscd.service's LD_LIBRARY_PATH, and nscd.conf has an interesting note:

# Note that we can not use `enable-cache no` As this will actually cause nscd
# to just reject the nss requests it receives, which then causes glibc to
# fallback to trying to handle the request by itself. Which won't work as glibc
# is not aware of the path in which the nss modules live.  As a workaround, we
# have `enable-cache yes` with an explicit ttl of 0