{
  coq,
  mkCoqDerivation,
  mathcomp-boot,
  lib,
  version ? null,
}:

mkCoqDerivation {

  namePrefix = [
    "coq"
    "mathcomp"
  ];
  pname = "bigenough";
  owner = "math-comp";

  release = {
    "1.0.0".sha256 = "10g0gp3hk7wri7lijkrqna263346wwf6a3hbd4qr9gn8hmsx70wg";
    "1.0.1".sha256 = "sha256:02f4dv4rz72liciwxb2k7acwx6lgqz4381mqyq5854p3nbyn06aw";
    "1.0.2".sha256 = "sha256-fJ/5xr91VtvpIoaFwb3PlnKl6UHG6GEeBRVGZrVLMU0=";
  };
  inherit version;
  defaultVersion =
    let
      case = case: out: { inherit case out; };
    in
    with lib.versions;
    lib.switch coq.coq-version [
      (case (range "8.10" "9.1") "1.0.2")
      (case (range "8.5" "8.14") "1.0.0")
    ] null;

  propagatedBuildInputs = [ mathcomp-boot ];

  meta = {
    description = "Small library to do epsilon - N reasonning";
    license = lib.licenses.cecill-b;
  };
}