pkgs/games: Display error if config is omitted

This originally was in the nixgames repository but I accidentally
omitted the attribute emitting the error message during refactoring.

Signed-off-by: aszlig <aszlig@nix.build>

1 files changed, 2 insertions, 2 deletions

diff --git a/pkgs/games/default.nix b/pkgs/games/default.nix
index f920089d..dd97148d 100644
--- a/pkgs/games/default.nix
+++ b/pkgs/games/default.nix
@@ -9,7 +9,7 @@ let
 
   configFile = if !builtins.pathExists configFilePath then throw ''
     The config file "${configFilePath}" doesn't exist! Be sure to create it and
-    put your HumbleBundle email address and password in it, like this:
+    put your credentials in it, for example to use HumbleBundle games:
 
     {
       humblebundle.email = "fancyuser@example.com";
@@ -41,7 +41,7 @@ let
 
   packages = (pkgs.lib.evalModules {
     modules = [
-      (if config == null then configFilePath else config)
+      (if config == null then configFile else config)
       baseModule ./humblebundle ./steam ./itch
     ];
   }).config.packages;