pkgs/games: Add a basic fetcher for GOG

We're in almost the same misery here as with HumbleBundle, because we
can't get stable download URLs with manifests for games that have an
"os" field of either "windows" or "osx".

Unfortunately, this isn't the only hoop we're going to, because similar
to the HumbleBundle fetcher, we need to solve a (re)captcha in order to
login (and I've been annoyed by countless cars, street signs, roads,
busses, store fronts, hills and mountains during development).

I tried looking for a way to get an API key similar to what itch.io is
doing, but the only mechanism in place is a temporary key which needs to
be refreshed using the old key after a while, so it's unsuitable for our
case.

The code currently is very much _not_ DRY, because a lot of it is copied
over and modified from fetchHumbleBundle, especially the captcha solving
application.

It's really a shame to see the same situation that we have for
HumbleBundle in GOG, given that HB is getting less DRM-free games these
days and GOG is DRM-free *only* (which is a very good thing).

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

1 files changed, 1 insertions, 1 deletions

diff --git a/pkgs/games/default.nix b/pkgs/games/default.nix
index dd97148d..ae86d30e 100644
--- a/pkgs/games/default.nix
+++ b/pkgs/games/default.nix
@@ -42,7 +42,7 @@ let
   packages = (pkgs.lib.evalModules {
     modules = [
       (if config == null then configFile else config)
-      baseModule ./humblebundle ./steam ./itch
+      baseModule ./humblebundle ./steam ./itch ./gog
     ];
   }).config.packages;