As GP implies, NixOS supports running multiple instances of any service you like, but the way some of the modules are written doesn't make it easy. Thankfully o

As GP implies, NixOS supports running multiple instances of any service you like, but the way some of the modules are written doesn't make it easy. Thankfully one of the advantages of NixOS is that it's pretty easy to add a configuration module to your personal configuration! In general, you can configure systemd yourself through `systemd.services`, where you can write systemd service files ‘directly’ in Nix syntax. Services for which multiple instances make sense often (unfortunately, not always) provide configuration that allows you to specify multiple instances (i.e. their top-level configuration object will be a list or attrset of instance configurations). I've written a little bit about patterns to do this here: https://twey.io/nix-patterns/inputs-and-outputs/ https://twey.io/nix-patterns/inputs-and-outputs/ If you needed, say, multiple instances of Postgres, it's not too challenging to copy-paste the nixpkgs implementation, change it a bit to parameterize the config on (e.g.) a service name for namespacing, then import that module into your NixOS configuration to allow you to define multiple instances. For example, I did this here for the Rainloop email client: https://github.com/Twey/dotfiles/blob/main/nixos/modules/services/rainloop.nix https://github.com/Twey/dotfiles/blob/main/nixos/modules/ser...