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{ lib
, fetchurl
, buildDunePackage
, cppo
, ppxlib
, ppx_derivers
, result
, ounit
, ocaml-migrate-parsetree
, ocaml-migrate-parsetree-2-1
}:
let params =
if lib.versionAtLeast ppxlib.version "0.20" then {
version = "5.2.1";
sha256 = "11h75dsbv3rs03pl67hdd3lbim7wjzh257ij9c75fcknbfr5ysz9";
useOMP2 = true;
} else if lib.versionAtLeast ppxlib.version "0.15" then {
version = "5.1";
sha256 = "1i64fd7qrfzbam5hfbl01r0sx4iihsahcwqj13smmrjlnwi3nkxh";
useOMP2 = false;
} else {
version = "5.0";
sha256 = "0fkzrn4pdyvf1kl0nwvhqidq01pnq3ql8zk1jd56hb0cxaw851w3";
useOMP2 = false;
}
; in
buildDunePackage rec {
pname = "ppx_deriving";
inherit (params) version;
useDune2 = true;
src = fetchurl {
url = "https://github.com/ocaml-ppx/ppx_deriving/releases/download/v${version}/ppx_deriving-v${version}.tbz";
inherit (params) sha256;
};
buildInputs = [ ppxlib cppo ];
propagatedBuildInputs = [
(if params.useOMP2
then ocaml-migrate-parsetree-2-1
else ocaml-migrate-parsetree)
ppx_derivers
result
];
doCheck = true;
checkInputs = [ ounit ];
meta = with lib; {
description = "deriving is a library simplifying type-driven code generation on OCaml >=4.02.";
maintainers = [ maintainers.maurer ];
license = licenses.mit;
};
}
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