pin-project-lite is the only base dependency, which itself has no dependencies. If you enable the "full" feature, ie all optional doodads turned on (which you likely don't need), it's 17: bytes, cfg-if, errno, libc, mio, parking_lot+parking_lot_core+lock_api, pin-project-lite, proc_macro2+quote+syn+unicode-ident, scopeguard, signal-hook-registry, smallvec, and socket2. You let me know which ones you think are bloat that it should reimplement or bind to a C library about, and without the blatant fabrication this time.