WIP: test: Set up service tests

configuration/default.nix

@@ -30,6 +30,8 @@
     ./nginx
   ];
 
+  nixpkgs.overlays = [ (_: prev: { local = import ../pkgs { pkgs = prev; }; }) ];
+
   nix = {
     extraOptions = ''
       experimental-features = nix-command flakes

configuration/services/starbound.nix

@@ -1,9 +1,4 @@
-{
+{ pkgs, lib, ... }:
-  flake-inputs,
-  pkgs,
-  lib,
-  ...
-}:
 let
   inherit (lib) concatStringsSep;
 in
@@ -16,9 +11,7 @@ in
     after = [ "network.target" ];
 
     serviceConfig = {
-      ExecStart = "${
+      ExecStart = "${pkgs.local.starbound}/bin/launch-starbound ${./configs/starbound.json}";
-        flake-inputs.self.packages.${pkgs.system}.starbound
-      }/bin/launch-starbound ${./configs/starbound.json}";
 
       Type = "simple";