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Ppxlib 0.36.0

We are happy to announce the release of ppxlib.0.36.0!

With this release, the internal AST that ppxlib targets has been bumped to the AST of OCaml 5.2. Ppx authors can now use features from OCaml 5.2. Ppxlib still supports any OCaml compiler after and including 4.08.0.

Many ppxes will be broken by changes made to the representation of functions. Authors are encouraged to read the upgrade guide.

See full changelog

  • Change Location.none to match the compiler's Location.none as of OCaml 4.08. This fixes a bug in loc_of_attribute (#540, @ncik-roberts, @patricoferris)

  • Bump ppxlib's AST to 5.2.0 (#514, @patricoferris)

  • Add the [@@@expand_inline] transformation and support for floating attribute context free transformations. (#560, @jaymody)

  • Add a -raise-embedded-errors flag to the driver. Setting this flag raises the first ocaml.error embedded in the final AST.

  • Export Ast_pattern.fail. (#563, @ceastlund)

  • Make Ast_traverse.sexp_of more concise, and add a test. (#561, @ceastlund)