Note this is the "fully contained Guix pack" (a bit like a container) which contains all the recursive dependencies, which includes WebKitGTK, GTK and the like.
Nyxt alone is about 100-150 MiB uncompressed, which is what it costs you if you install it via your package manager.
Nyxt alone is about 100-150 MiB uncompressed, which is what it costs you if you install it via your package manager.