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Changelog

4.4

  • Restore support for OCaml 4.02.3 #188 (ELLIOTTCABLE)
  • workaround Location.input_filename being empty when using reason-language-server #196 (Ryan Artecona)
  • Add support for OCaml 4.08.0 #193, #197, #200 (Gabriel Scherer)

4.3

  • use Format through Ppx_deriving_runtime to avoid deprecation warning for users of JaneStreet Base (Stephen Bastians and Gabriel Scherer, review by whitequark)
  • silence a ambiguous-field warning (41) in generated code #163 (Étienne Millon, review by Gabriel Scherer)
  • use dune #170 (Rudi Grinberg, Jérémie Dimino)
  • silence an unused-value warning for show #179 (Nathan Rebours)

4.2.1

  • Add support for OCaml 4.06.0 #154, #155, #156, #159 (Gabriel Scherer, Fabian, Leonid Rozenberg)
  • Consider { with_path = false } when printing record fields #157 (François Pottier)

4.2

  • Add support for OCaml 4.05.0.
  • Use the ocaml-migrate-parsetree library to support multiple versions of OCaml.
  • Fix comparison order of fields in records (#136).
  • Silence an unused rec flag warning in generated code (#137).
  • Monomorphize comparison function for builtin types (#115)
  • Raise an error when type nonrec is encountered (#116).
  • Display an error message when dynamic package loading fails.
  • Add a with_path option to @@deriving to skip the module path in generated code (#120).

The homepage for the project has now moved to: https://github.com/ocaml-ppx/ppx_deriving

4.1

  • Fix type error with inheritied polymorphic variant type in [@@deriving map].
  • Fix incorrect handling of multi-argument constructors in [@@deriving show].
  • Add API hooks for ppx_type_conv.

4.0

  • Show, eq, ord, map, iter, fold: add support for Result.result.
  • Ppx_deriving.Arg: use Result.result instead of polymorphic variants.
  • Ppx_deriving.sanitize: parameterize over an opened module.
  • Add support for [@@deriving] in module type declarations.
  • Add support for loading findlib packages instead of just files in ppx_deriving_main.
  • Treat types explicitly qualified with Pervasives also as builtin.
  • Compatibility with statically linked ppx drivers.

3.1

  • Show, eq, ord: hygienically invoke functions from referenced modules (such as X.pp for X.t when deriving show) to coexist with modules shadowing ones from standard library.
  • Iter, map, fold: hygienically invoke List and Array functions.

3.0

  • Implement hygiene: Ppx_deriving.{create_quoter,quote,sanitize,with_quoter}.
  • Show, eq, ord: add support for lazy_t.
  • Add support for [@nobuiltin] attribute.
  • Add Ppx_deriving.hash_variant.
  • Remove allow_std_type_shadowing option.
  • Remove Ppx_deriving.extract_typename_of_type_group.

2.1

  • Fix breakage occurring with 4.02.2 w.r.t record labels
  • Fix prefixed attribute names ([@deriving.foo.attr] and [@foo.attr]).
  • Add allow_std_type_shadowing option for eq and show.

2.0

  • Add support for open types.

1.1

  • New plugin: create.
  • Show, eq, ord: handle _.
  • Show, eq, ord, map, iter, fold: handle inheriting from a parametric polymorphic variant type.
  • Make Ppx_deriving.poly_{fun,arrow}_of_type_decl construct functions in correct order. This also fixes all derivers with types with more than one parameter.
  • Add Ppx_deriving.fold_{left,right}_type_decl.

1.0

  • Make deriver names lowercase.
  • Remove Findlib+dynlink integration. All derivers must now be explicitly required.
  • Allow shortening [%derive.x:] to [%x:] when deriver x exists.
  • Make Ppx_deriving.core_type field optional to allow ignoring unsupported [%x:] shorthands.
  • Add support for [@@deriving foo { optional = true }] that does not error out if foo is missing, useful for optional dependencies.
  • Rename ~name and ~prefix of Ppx_deriving.attr and Ppx_deriving.Arg.payload to ~deriver.
  • Renamed Ppx_deriving.Arg.payload to get_attr.
  • Add Ppx_deriving.Arg.get_expr and get_flag.

0.3

  • Show, Eq, Ord, Iter, Fold: handle ref.
  • Show: handle functions.
  • Show: include break hints in format strings.
  • Show: pull fprintf into local environment.
  • Show: add [@polyprinter] and [@opaque].
  • Add Ppx_deriving.Arg.expr.

0.2

  • New plugins: Enum, Iter, Map, Fold.
  • All plugins: don't concatenate affix if type is named t.
  • Add [%derive.Foo:] shorthand.
  • Show, Eq, Ord: add support for list, array, option.
  • Show: include full module path in output, including for types with manifest.
  • A lot of changes in Ppx_deriving interface.

0.1

  • Initial release.