79 lines
2.4 KiB
Raku
79 lines
2.4 KiB
Raku
The following setup makes the `root_module` stanza export the `Logs`
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modules twice, entailing the following error:
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```
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| File "root.ml-gen", line 15, characters 0-18:
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| 15 | module Logs = Logs
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| ^^^^^^^^^^^^^^^^^^
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| Error: Multiple definition of the module name Logs.
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| Names must be unique in a given structure or signature.
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| [1]
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```
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Create a dummy library to depend on. The configuration is loosely
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based on the logs package, which triggers the issue in real life.
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$ mkdir -p findlib-packages/logs
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$ cat >findlib-packages/logs/META <<EOF
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> description = "Logging infrastructure for OCaml"
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> version = "0.7.0"
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> requires = ""
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> archive(byte) = "logs.cma"
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> archive(native) = "logs.cmxa"
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> plugin(byte) = "logs.cma"
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> plugin(native) = "logs.cmxs"
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> package "lwt" (
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> description = "Lwt support for Logs"
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> version = "0.7.0"
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> requires = "logs"
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> archive(byte) = "logs_lwt.cma"
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> archive(native) = "logs_lwt.cmxa"
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> plugin(byte) = "logs_lwt.cma"
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> plugin(native) = "logs_lwt.cmxs"
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> )
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> EOF
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$ touch findlib-packages/logs/logs.ml
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$ touch findlib-packages/logs/logs.mli
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$ ocamlc -c findlib-packages/logs/logs.mli -o findlib-packages/logs/logs.cmi
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$ ocamlc -c -I findlib-packages/logs findlib-packages/logs/logs.ml -o findlib-packages/logs/logs.cmo
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$ ocamlc -a findlib-packages/logs/logs.cmo -o findlib-packages/logs/logs.cma
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$ touch findlib-packages/logs/logs_lwt.ml
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$ touch findlib-packages/logs/logs_lwt.mli
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$ ocamlc -c findlib-packages/logs/logs_lwt.mli -o findlib-packages/logs/logs_lwt.cmi
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$ ocamlc -c -I findlib-packages/logs findlib-packages/logs/logs_lwt.ml -o findlib-packages/logs/logs_lwt.cmo
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$ ocamlc -a findlib-packages/logs/logs_lwt.cmo -o findlib-packages/logs/logs_lwt.cma
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$ export OCAMLPATH="./findlib-packages"
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Setup the dune project.
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$ cat >dune-project <<EOF
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> (lang dune 3.4)
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> EOF
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$ cat >dune <<EOF
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> (library
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> (name root_module)
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> (root_module root)
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> (libraries logs.lwt))
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> EOF
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$ cat >root_module.ml <<EOF
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> module Logs = Root.Logs
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> EOF
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Trigger the error.
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$ dune build
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File "root.ml-gen", line 3, characters 0-18:
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3 | module Logs = Logs
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^^^^^^^^^^^^^^^^^^
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Error: Multiple definition of the module name Logs.
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Names must be unique in a given structure or signature.
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[1]
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$ cat _build/default/root.ml-gen
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module Logs = Logs
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module Logs_lwt = Logs_lwt
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module Logs = Logs
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module Logs_lwt = Logs_lwt
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