Ocaml: dune build not create dune-project file

[imdouyu]

Hi, I am new to Ocaml, and follow tutorial to set up develop environment, then try helloworld with dune and OCaml.

$ dune init exe helloworld
Success: initialized executable component named helloworld
$ dune build
Error: I cannot find the root of the current workspace/project.
If you would like to create a new dune project, you can type:

    dune init project NAME

Otherwise, please make sure to run dune inside an existing project or
workspace. For more information about how dune identifies the root of the
current workspace/project, please refer to
https://dune.readthedocs.io/en/stable/usage.html#finding-the-root

According to this answer, I manually add dune-project file, then everything ok.

So I want to ask if dune-project file need add manually after dune version 3.0 or other command automaticlly create it?

Specifications

• Version of dune (output of dune --version): 3.0.2
• Version of ocaml (output of ocamlc --version): 4.11.1
• Operating system (distribution and version): WSL2

[bobot]

Duplicate of #5460. dune initshould create the dune-projectfile.