games: Use preferLocalBuild for fetchers

If we're on a machine with remote builds enabled, we'd like to prefer
not having our login credentials to be pushed on a remote server.

We of course also don't want the actual games to end up on a different
machine, so let's use preferLocalBuild to avoid this.

Unfortunately avoidance is not at any cost, because if we for example
use a different system attribute, it might be built on a remote machine
nevertheless. Ideally there would be something like "forceLocalBuild",
which avoids remote builds at any cost.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/pkgs/games/humblebundle/fetch-humble-bundle/default.nix b/pkgs/games/humblebundle/fetch-humble-bundle/default.nix
index 063d4a02..f6f161dc 100644
--- a/pkgs/games/humblebundle/fetch-humble-bundle/default.nix
+++ b/pkgs/games/humblebundle/fetch-humble-bundle/default.nix
@@ -80,6 +80,7 @@
   in runCommandCC "get-captcha" {
     nativeBuildInputs = [ pkgconfig ];
     buildInputs = [ qt5.qtbase qt5.qtwebengine ];
+    preferLocalBuild = true;
   } ''
     g++ $(pkg-config --libs --cflags Qt5WebEngineWidgets Qt5WebEngine) \
       -Wall -std=c++11 -o "$out" ${application}
@@ -183,6 +184,7 @@ in stdenv.mkDerivation {
   outputHashAlgo = "md5";
   outputHash = md5;
 
+  preferLocalBuild = true;
   buildInputs = [ python humbleAPI ];
 
   buildCommand = ''