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

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{ stdenv, fetchFromGitHub, ocaml, findlib }:
let
version =
if stdenv.lib.versionAtLeast (stdenv.lib.getVersion ocaml) "4.03" then "5.0+4.03.0" else "5.0+4.02.0";
in
stdenv.mkDerivation {
name = "ocaml-ppx_tools-${version}";
src = fetchFromGitHub {
owner = "alainfrisch";
repo = "ppx_tools";
rev = version;
sha256 = if version == "5.0+4.03.0"
then "061v1fl5z7z3ywi4ppryrlcywnvnqbsw83ppq72qmkc7ma4603jg"
else "16drjk0qafjls8blng69qiv35a84wlafpk16grrg2i3x19p8dlj8"
;
};
buildInputs = [ ocaml findlib ];
createFindlibDestdir = true;
meta = with stdenv.lib; {
description = "Tools for authors of ppx rewriters";
homepage = http://www.lexifi.com/ppx_tools;
license = licenses.mit;
platforms = ocaml.meta.platforms or [];
maintainers = with maintainers; [ vbgl ];
};
}