aantron/dream

Error while compiling with OCaml 5.0.0~beta1

davisuga opened this issue · 2 comments

davisuga commented

When I run opam install dream I get the following error:

[ERROR] The compilation of dream-httpaf.1.0.0~alpha1 failed at "dune build -p dream-httpaf -j 7".

#=== ERROR while compiling dream-httpaf.1.0.0~alpha1 ==========================#
# context     2.1.0 | linux/x86_64 | ocaml-base-compiler.5.0.0~beta1 | https://opam.ocaml.org#46f6ac78
# path        ~/.opam/5.0.0~beta1/.opam-switch/build/dream-httpaf.1.0.0~alpha1
# command     ~/.opam/opam-init/hooks/sandbox.sh build dune build -p dream-httpaf -j 7
# exit-code   1
# env-file    ~/.opam/log/dream-httpaf-500207-5b2623.env
# output-file ~/.opam/log/dream-httpaf-500207-5b2623.out
### output ###
# [...]
# 38 | 
# 39 |     let hash i k = Hashtbl.seeded_hash i k
# 40 |   end)
# Error: Modules do not match:
#        sig
#          type t = H2__.Stream_identifier.t
#          val equal : Int32.t -> Int32.t -> bool
#          val hash : int -> 'a -> int
#        end
#      is not included in Hashtbl.SeededHashedType
#      The value `seeded_hash' is required but not provided
#      File "hashtbl.mli", line 399, characters 4-36: Expected declaration

output file content:

(cd _build/default && /home/davi/.opam/5.0.0~beta1/bin/ocamlc.opt -w -40 -g -bin-annot -I src/vendor/h2/lib/.h2.objs/byte -I /home/davi/.opam/5.0.0~beta1/lib/angstrom -I /home/davi/.opam/5.0.0~beta1/lib/base64 -I /home/davi/.opam/5.0.0~beta1/lib/bigstringaf -I /home/davi/.opam/5.0.0~beta1/lib/bytes -I /home/davi/.opam/5.0.0~beta1/lib/faraday -I /home/davi/.opam/5.0.0~beta1/lib/psq -I /home/davi/.opam/5.0.0~beta1/lib/result -I /home/davi/.opam/5.0.0~beta1/lib/seq -I src/vendor/h2/hpack/src/.hpack.objs/byte -I src/vendor/httpaf/lib/.httpaf.objs/byte -no-alias-deps -open H2__ -o src/vendor/h2/lib/.h2.objs/byte/h2__Scheduler.cmo -c -impl src/vendor/h2/lib/scheduler.ml)
File "src/vendor/h2/lib/scheduler.ml", lines 34-40, characters 10-6:
34 | ..........Hashtbl.MakeSeeded (struct
35 |     type t = Stream_identifier.t
36 | 
37 |     let equal = Stream_identifier.( === )
38 | 
39 |     let hash i k = Hashtbl.seeded_hash i k
40 |   end)
Error: Modules do not match:
       sig
         type t = H2__.Stream_identifier.t
         val equal : Int32.t -> Int32.t -> bool
         val hash : int -> 'a -> int
       end
     is not included in Hashtbl.SeededHashedType
     The value `seeded_hash' is required but not provided
     File "hashtbl.mli", line 399, characters 4-36: Expected declaration

Should I change the OCaml version or there is something I can do to fix this?

mseri commented

If you use ocaml 5 beta you need to add the alpha releases repository

opam repo add alpha git+https://github.com/kit-ty-kate/opam-alpha-repository.git

This does contain a patched version of dream compiling with ocaml 5

  • 👍1
aantron commented

This was fixed today in master by cdd4a1b. Thank you!

  • 🎉1