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

mkCoqDerivation {
  pname = "coq-bits";
  repo = "bits";
  inherit version;
  defaultVersion = with lib.versions; lib.switch [ coq.version mathcomp.version ] [
    { cases = [ (range "8.10" "8.16") (isLt "2.0") ]; out = "1.1.0"; }
    { cases = [ (range "8.7"  "8.15") (isLt "2.0") ]; out = "1.0.0"; }
  ] null;

  release."1.1.0".sha256 = "sha256-TCw1kSXeW0ysIdLeNr+EGmpGumEE9i8tinEMp57UXaE=";
  release."1.0.0".sha256 = "0nv5mdgrd075dpd8bc7h0xc5i95v0pkm0bfyq5rj6ii1s54dwcjl";

  propagatedBuildInputs = [ mathcomp.algebra ];

  meta = with lib; {
    description = "A formalization of bitset operations in Coq";
    license = licenses.asl20;
    maintainers = with maintainers; [ ptival ];
  };
}