nixpkgs/pkgs/development/ocaml-modules/ppx_deriving/default.nix

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{ stdenv, buildOcaml, ocaml, fetchzip
, cppo, ppx_tools, ppx_derivers, result, ounit, ocaml-migrate-parsetree
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}:
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let param =
if ocaml.version == "4.03.0"
then {
version = "4.1";
sha256 = "0cy9p8d8cbcxvqyyv8fz2z9ypi121zrgaamdlp4ld9f3jnwz7my9";
extraPropagatedBuildInputs = [];
} else {
version = "4.2.1";
sha256 = "1yhhjnncbbb7fsif7qplndh01s1xd72dqm8f3jkgx9y4ariqqvf9";
extraPropagatedBuildInputs = [ ocaml-migrate-parsetree ppx_derivers ];
}; in
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buildOcaml rec {
name = "ppx_deriving";
inherit (param) version;
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minimumSupportedOcamlVersion = "4.02";
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src = fetchzip {
url = "https://github.com/whitequark/${name}/archive/v${version}.tar.gz";
inherit (param) sha256;
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};
hasSharedObjects = true;
buildInputs = [ cppo ounit ];
propagatedBuildInputs = param.extraPropagatedBuildInputs ++
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[ ppx_tools result ];
installPhase = "OCAMLPATH=$OCAMLPATH:`ocamlfind printconf destdir` make install";
meta = with stdenv.lib; {
description = "deriving is a library simplifying type-driven code generation on OCaml >=4.02.";
maintainers = [ maintainers.maurer ];
license = licenses.mit;
};
}