nixpkgs terraria module - add home config

configuration.nix

{ config, lib, pkgs, ... }:
{
  services.sshd.enable = true;
  services.terraria = {
    enable = true;
    home = "/srv/terraria";
  };
  nixpkgs.config.allowUnfree = true;

  networking.firewall.allowedTCPPorts = [ 80 ];
  
  users.users.root.password = "nixos";
  services.openssh.permitRootLogin = lib.mkDefault "yes";
  #services.mingetty.autologinUser = lib.mkDefault "root";
}

invocation.sh

./nixos-generate -c configuration.nix -f vm-nogui --run -I nixpkgs=/home/evanjs/src/nixpkgs

nixpkgs.diff

diff --git a/nixos/modules/services/games/terraria.nix b/nixos/modules/services/games/terraria.nix
index a59b74c0b4c..6572e37ba04 100644
--- a/nixos/modules/services/games/terraria.nix
+++ b/nixos/modules/services/games/terraria.nix
@@ -25,7 +25,7 @@ let
       exit 0
     fi
 
-    ${getBin pkgs.tmux}/bin/tmux -S /var/lib/terraria/terraria.sock send-keys Enter exit Enter
+    ${getBin pkgs.tmux}/bin/tmux -S ${cfg.home}/terraria.sock send-keys Enter exit Enter
     ${getBin pkgs.coreutils}/bin/tail --pid="$1" -f /dev/null
   '';
 in
@@ -36,7 +36,7 @@ in
         type        = types.bool;
         default     = false;
         description = ''
-          If enabled, starts a Terraria server. The server can be connected to via <literal>tmux -S /var/lib/terraria/terraria.sock attach</literal>
+          If enabled, starts a Terraria server. The server can be connected to via <literal>tmux -S ${cfg.home}/terraria.sock attach</literal>
           for administration by users who are a part of the <literal>terraria</literal> group (use <literal>C-b d</literal> shortcut to detach again).
         '';
       };
@@ -111,13 +111,18 @@ in
         default     = false;
         description = "Disables automatic Universal Plug and Play.";
       };
+      home = mkOption {
+        type        = types.str;
+        default     = "/var/lib/terraria";
+        description = "Home directory for terraria.";
+      };
     };
   };
 
   config = mkIf cfg.enable {
     users.users.terraria = {
       description = "Terraria server service user";
-      home        = "/var/lib/terraria";
+      home        = cfg.home;
       createHome  = true;
       uid         = config.ids.uids.terraria;
     };
@@ -136,13 +141,13 @@ in
         User    = "terraria";
         Type = "forking";
         GuessMainPID = true;
-        ExecStart = "${getBin pkgs.tmux}/bin/tmux -S /var/lib/terraria/terraria.sock new -d ${pkgs.terraria-server}/bin/TerrariaServer ${concatStringsSep " " flags}";
+        ExecStart = "${getBin pkgs.tmux}/bin/tmux -S ${cfg.home}/terraria.sock new -d ${pkgs.terraria-server}/bin/TerrariaServer ${concatStringsSep " " flags}";
         ExecStop = "${stopScript} $MAINPID";
       };
 
       postStart = ''
-        ${pkgs.coreutils}/bin/chmod 660 /var/lib/terraria/terraria.sock
-        ${pkgs.coreutils}/bin/chgrp terraria /var/lib/terraria/terraria.sock
+        ${pkgs.coreutils}/bin/chmod 660 ${cfg.home}/terraria.sock
+        ${pkgs.coreutils}/bin/chgrp terraria ${cfg.home}/terraria.sock
       '';
     };
   };