Looking at the opam repo, ppxlib 0.20.0 requires ocaml-parse-tree >= 2.1.0, which is the latest. You have version 1.8.0.
Le 30 décembre 2020 11:55:11 GMT-05:00, divoplade <d...@divoplade.fr> a écrit : >Dear guix, > >I am trying to build js-of-ocaml. I have created an updated version of >ocaml-compiler-libs, ocaml-migrate-parsetree and ocaml-ppxlib, and >tried to build the latest js_of_ocaml with that, but I get the >following error when building the updated ppxlib: > >starting phase `build' >File "_build/default/.ppx/0224ad3443a846e54f1637fccb074e7d/ppx.exe", >line 1, characters 0-0: >Error: Failed to create on-demand ppx rewriter for ppxlib.metaquot; too >many >incompatible ppx drivers were found: ppxlib and ocaml-migrate- >parsetree. >File "_build/default/.ppx/3134a5298fb2c80808cc94dd434856cb/ppx.exe", >line 1, characters 0-0: >Error: Failed to create on-demand ppx rewriter for ppxlib.traverse; too >many >incompatible ppx drivers were found: ppxlib and ocaml-migrate- >parsetree. >File "traverse/dune", line 7, characters 13-48: >7 | (preprocess (pps ppxlib_metaquot ppxlib.runner))) > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >Error: Too many incompatible ppx drivers were found: ppxlib and >ocaml-migrate-parsetree. >File "ast/ast_helper_lite.mli", line 18, characters 0-17: >18 | open Ocaml_common > ^^^^^^^^^^^^^^^^^ >Error (warning 33): unused open Ocaml_common. >command "dune" "build" "@install" failed with status 1 >builder for `/gnu/store/k7wfvxqbp07f8idjsbzi699v5y163j24-ocaml-ppxlib- >0.20.0.drv' failed with exit code 1 > >Why are these two packages "incompatible"? Do you understand what is >happening?
