self: super: with self; rec { name = "fast_float"; version = "7.0.0"; src = fetchFromGitHub { owner = "fastfloat"; repo = "fast_float"; rev = "v${version}"; hash = "sha256-CG5je117WYyemTe5PTqznDP0bvY5TeXn8Vu1Xh5yUzQ="; }; }