gonzo:[/tmp/wheel]$ ls -lh osx/pants/engine/native_engine.so 
-rw-r--r--  1 benjyw  wheel    14M Mar  3 22:46 osx/pants/engine/native_engine.so
gonzo:[/tmp/wheel]$ ls -lh linux/pants/engine/native_engine.so 
-rw-r--r--  1 benjyw  wheel   126M Mar  3 22:47 linux/pants/engine/native_engine.so