{ lib, mkCoqDerivation, coq, version ? null
, ssreflect
, deriving
}:

(mkCoqDerivation {
  pname = "extructures";
  owner = "arthuraa";

  inherit version;
  defaultVersion = with lib.versions; lib.switch [coq.coq-version ssreflect.version] [
    { cases = [(range "8.17" "8.19") (isGe "2.0.0")  ]; out = "0.4.0"; }
    { cases = [(range "8.11" "8.18") (range "1.12.0" "1.18.0") ]; out = "0.3.1"; }
    { cases = [(range "8.11" "8.14") (isLe "1.12.0") ]; out = "0.3.0"; }
    { cases = [(range "8.10" "8.12") (isLe "1.12.0") ]; out = "0.2.2"; }
  ] null;

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

  release."0.4.0".sha256 = "sha256-hItFO2XY2LTPSofPTKt3AfOEfiLliaYdzUXgDv4ea9Y=";
  release."0.3.1".sha256 = "sha256-KcuG/11Yq5ACem4FyVnQqHKvy3tNK7hd0ir2SJzzMN0=";
  release."0.3.0".sha256 = "sha256:14rm0726f1732ldds495qavg26gsn30w6dfdn36xb12g5kzavp38";
  release."0.2.2".sha256 = "sha256:1clzza73gccy6p6l95n6gs0adkqd3h4wgl4qg5l0qm4q140grvm7";

  propagatedBuildInputs = [ ssreflect ];

  meta = with lib; {
    description = "Finite data structures with extensional reasoning";
    license = licenses.mit;
    maintainers = [ maintainers.vbgl ];
  };

}).overrideAttrs (o: {
  propagatedBuildInputs = o.propagatedBuildInputs
  ++ lib.optional (lib.versionAtLeast o.version "0.3.0") deriving;
})