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

let
  namePrefix = [ "coq" "mathcomp" ];
  pname = "word";
  fetcher = { domain, owner, repo, rev, sha256 ? null, ...}:
    let prefix = "https://${domain}/${owner}/${repo}/"; in
    if sha256 == null then
      fetchTarball { url = "${prefix}archive/refs/heads/${rev}.tar.gz"; } else
  fetchurl {
    url = "${prefix}releases/download/${rev}/${lib.concatStringsSep "-" (namePrefix ++ [ pname ])}-${rev}.tbz";
    inherit sha256;
  };
in

mkCoqDerivation {
  inherit namePrefix pname fetcher;
  owner = "jasmin-lang";
  repo = "coqword";
  useDune = true;

  releaseRev = v: "v${v}";

  release."3.2".sha256 = "sha256-4HOFFQzKbHIq+ktjJaS5b2Qr8WL1eQ26YxF4vt1FdWM=";
  release."3.1".sha256 = "sha256-qQHis6554sG7NpCpWhT2wvelnxsrbEPVNv3fpxwxHMU=";
  release."3.0".sha256 = "sha256-xEgx5HHDOimOJbNMtIVf/KG3XBemOS9XwoCoW6btyJ4=";
  release."2.4".sha256 = "sha256-OG99PfjhtKikxM9aBKRsej1gTo1O/llAdXdiiyjZf2Q=";
  release."2.3".sha256 = "sha256-whU1yvFFuxpwQutW41B/WBg5DrVZJW/Do/GuHtzuI3U=";
  release."2.2".sha256 = "sha256-8BB6SToCrMZTtU78t2K+aExuxk9O1lCqVQaa8wabSm8=";
  release."2.1".sha256 = "sha256-895gZzwwX8hN9UUQRhcgRlphHANka9R0PRotfmSEelA=";
  release."2.0".sha256 = "sha256-ySg3AviGGY5jXqqn1cP6lTw3aS5DhawXEwNUgj7pIjA=";

  inherit version;
  defaultVersion = with lib.versions; lib.switch [ coq.version mathcomp.version ] [
    { cases = [ (range "8.16" "8.20") (isGe "2.0")          ]; out = "3.2"; }
    { cases = [ (range "8.12" "8.20") (range "1.12" "1.19") ]; out = "2.4"; }
  ] null;

  propagatedBuildInputs = [ mathcomp.algebra mathcomp.ssreflect mathcomp.fingroup ];

  meta = with lib; {
    description = "Yet Another Coq Library on Machine Words";
    maintainers = [ maintainers.vbgl ];
    license = licenses.mit;
  };
}
