scons: Add passthru.py2 for backward compatibility

Not all packages build with Python 3, see #75877. The goal is to get rid
of Python 2 but this approach ensures a smoother transition.

1 files changed, 2 insertions, 1 deletions

diff --git a/pkgs/applications/audio/mixxx/default.nix b/pkgs/applications/audio/mixxx/default.nix
index 82db91dcb07..950469e9a33 100644
--- a/pkgs/applications/audio/mixxx/default.nix
+++ b/pkgs/applications/audio/mixxx/default.nix
@@ -17,10 +17,11 @@ mkDerivation rec {
     sha256 = "1h7q25fv62c5m74d4cn1m6mpanmqpbl2wqbch4qvn488jb2jw1dv";
   };
 
+  nativeBuildInputs = [ scons.py2 ];
   buildInputs = [
     chromaprint fftw flac faad2 glibcLocales mp4v2 libid3tag libmad libopus libshout libsndfile
     libusb1 libvorbis libxcb libGLU lilv lv2 opusfile pkgconfig portaudio portmidi protobuf qtbase qtscript qtsvg
-    qtx11extras rubberband scons sqlite taglib upower vampSDK
+    qtx11extras rubberband sqlite taglib upower vampSDK
   ];
 
   enableParallelBuilding = true;