6b6348eaba
When using a different database, the evaluation fails as `config.services.postgresql.package` is only set if `services.postgresql` is enabled. Also, the systemd service shouldn't have a relation to postgres if a remote database is used.
*** 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.