diff --git a/flake.lock b/flake.lock
index 805e68ba..7f1c54e8 100644
--- a/flake.lock
+++ b/flake.lock
@@ -322,6 +322,22 @@
         "type": "github"
       }
     },
+    "master": {
+      "locked": {
+        "lastModified": 1665245146,
+        "narHash": "sha256-OhAD7mOpsfHqz8OR78PirgqF3vB1fgnENYgdasbmaM0=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "ab92858d678818839843d19050942e841a04abd1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "master",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "naersk": {
       "inputs": {
         "nixpkgs": [
@@ -497,6 +513,7 @@
         "digga": "digga",
         "home": "home",
         "latest": "latest_2",
+        "master": "master",
         "naersk": "naersk",
         "nixos": "nixos",
         "nixos-generators": "nixos-generators",
diff --git a/flake.nix b/flake.nix
index 4bb0249f..d4c44813 100644
--- a/flake.nix
+++ b/flake.nix
@@ -10,6 +10,7 @@
       # Track channels with commits tested and built by hydra
       nixos.url = "github:nixos/nixpkgs/nixos-22.05";
       latest.url = "github:nixos/nixpkgs/nixos-unstable";
+      master.url = "github:nixos/nixpkgs/master";
       pub-solar.url = "github:pub-solar/nixpkgs/fix/use-latest-unstable-yubikey-agent";
 
       digga.url = "github:pub-solar/digga/fix/bootstrap-iso";
@@ -69,6 +70,7 @@
             overlays = [ ];
           };
           latest = { };
+          master = { };
         };
 
         lib = import ./lib { lib = digga.lib // nixos.lib; };
diff --git a/hosts/chocolatebar/chocolatebar.nix b/hosts/chocolatebar/chocolatebar.nix
index 9b55e06f..6819481b 100644
--- a/hosts/chocolatebar/chocolatebar.nix
+++ b/hosts/chocolatebar/chocolatebar.nix
@@ -8,6 +8,7 @@ in
   imports = [
     ./configuration.nix
     ./virtualisation
+    ./factorio
   ];
 
   config = {
@@ -27,6 +28,7 @@ in
     environment.systemPackages = with pkgs; [
       wayvnc
       drone-docker-runner
+      stdenv.cc.cc.lib
     ];
 
     age.secrets."vnc-key.pem" = {
@@ -42,10 +44,16 @@ in
     pub-solar.sway.vnc.enable = true;
     pub-solar.ci-runner.enable = true;
 
-    home-manager.users."${psCfg.user.name}".xdg.configFile = mkIf psCfg.sway.enable {
-      "sway/config.d/10-autostart.conf".source = ./.config/sway/config.d/autostart.conf;
-      "sway/config.d/10-input-defaults.conf".source = ./.config/sway/config.d/input-defaults.conf;
-      "sway/config.d/10-screens.conf".source = ./.config/sway/config.d/screens.conf;
+    home-manager.users."${psCfg.user.name}" = {
+      xdg.configFile = mkIf psCfg.sway.enable {
+        "sway/config.d/10-autostart.conf".source = ./.config/sway/config.d/autostart.conf;
+        "sway/config.d/10-input-defaults.conf".source = ./.config/sway/config.d/input-defaults.conf;
+        "sway/config.d/10-screens.conf".source = ./.config/sway/config.d/screens.conf;
+      };
+
+      home.sessionVariables = {
+        NIX_CC = "${pkgs.stdenv.cc}";
+      };
     };
   };
 }
diff --git a/hosts/chocolatebar/factorio/default.nix b/hosts/chocolatebar/factorio/default.nix
new file mode 100644
index 00000000..f7e45255
--- /dev/null
+++ b/hosts/chocolatebar/factorio/default.nix
@@ -0,0 +1,38 @@
+{ config, pkgs, lib, self, ... }:
+with lib;
+let
+  psCfg = config.pub-solar;
+  xdg = config.home-manager.users."${psCfg.user.name}".xdg;
+
+  far-reach = pkgs.stdenv.mkDerivation rec {
+    pname = "factorio-far-reach";
+    version = "1.1.2";
+    src = ./far-reach_1.1.2.zip;
+    phases = [ "installPhase" ];
+    deps = [ ];
+    installPhase = ''
+      mkdir -p $out
+      cp $src far-reach_1.1.2.zip
+    '';
+  };
+in
+{
+  config = {
+    services.factorio = {
+      enable = true;
+      port = 34197; # The default, but make it explicit
+      lan = true;
+      admins = [
+        "doubtwriter"
+        "scottjive"
+      ];
+      openFirewall = true;
+      autosave-interval = 3;
+      game-name = "Babes plays";
+      requireUserVerification = false;
+      mods = [
+        far-reach
+      ];
+    };
+  };
+}
diff --git a/hosts/chocolatebar/factorio/far-reach_1.1.2.zip b/hosts/chocolatebar/factorio/far-reach_1.1.2.zip
new file mode 100644
index 00000000..4bae7ec8
Binary files /dev/null and b/hosts/chocolatebar/factorio/far-reach_1.1.2.zip differ
diff --git a/overlays/overrides.nix b/overlays/overrides.nix
index 243373bc..3471932b 100644
--- a/overlays/overrides.nix
+++ b/overlays/overrides.nix
@@ -21,12 +21,17 @@ channels: final: prev: {
     tdesktop
     arduino
     arduino-cli
+    steam
     ;
 
   inherit (channels.pub-solar)
     yubikey-agent
     ;
 
+  inherit (channels.master)
+    factorio-headless
+    ;
+
 
   haskellPackages = prev.haskellPackages.override
     (old: {