oscar: Switch factorio -> factorio-space-age

For a new version that hasn't hit `nixpkgs-unstable` yet, use this
instead of the second change below:

    # (import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/<commit hash>.tar.gz") {
    #   config.allowUnfree = true;
    # }).factorio-space-age

oscar/configuration.nix

@@ -124,8 +124,8 @@
   home-manager.users.chandler = { pkgs, ... }: {
 
     nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
-      "factorio-alpha"
       "discord"
+      "factorio-space-age"
     ];
 
     home.packages = with pkgs; [
@@ -145,7 +145,6 @@
       qgis
 
       # command line applications
-      beets
       iperf
       units
 
@@ -165,7 +164,7 @@
 
       # Unfree:
       discord
-      factorio
+      factorio-space-age
     ];
 
     programs.thunderbird.enable = true;
@@ -218,6 +217,7 @@
         "*~"
         "\\#*\\#"
         "venv"
+        ".direnv"
       ];
       hooks = {
         pre-commit = ./git-pre-commit-hook;
@@ -251,6 +251,21 @@
 #       };
     };
 
+    programs.beets = {
+      enable = true;
+      settings = {
+        directory = "~/nas/chandler/public/media/music";
+        library = "~/nas/chandler/public/media/music/beets.db";
+        plugins = [
+          "fetchart"
+          # "lyrics"
+          # "subsonicupdate" # TODO
+          "mbsubmit"
+          "edit"
+        ];
+      };
+    };
+
     programs.chromium = {
       enable = true;
       extensions = [