
These packages will be placed into an environment using `backendsToPackages`. This function explicitly maps backends to `pkgs.nodePackages.${type}` unless it's a builtin. This ensures that only valid backends that work on NixOS are used (if not, the build already breaks at evaluation time). The log will be redirected to `stdout` to be able to watch the entire output using `journalctl`. Configuration parameters for the backends need to be set using `services.statsd.extraConfig` as each backend has its own options and all of them shouldn't be validated and checked explicitly and manually.
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.