Based on Steam build 5485236: 12.5 GB, thanks to chronos!
Goldberg emu applied over
100% Lossless & MD5 Perfect: all files are identical to originals after installation
NOTHING ripped, NOTHING re-encoded
Selective Download feature: you may skip downloading and installing of unused Switch audio files
Significantly smaller archive size (compressed from 12.5 to 2.6/2.8 GB)
Installation takes 2-4 minutes (depending on your system)
After-install integrity check so you could make sure that everything installed properly
HDD space after installation: up to 13 GB
Language can be changed in game settings
At least 2 GB of free RAM (inc. virtual) required for installing this repack