Automatically add extras entry for --optional

[xsduan]

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• I have searched the documentation and believe that my question is not covered.

Question

So it took a while and 4 tries, but apparently to add extras you have to both do poetry add lib --optional and add a field in [tool.poetry.extras] as a list of dependencies for each group. It would be nice if the default behavior of poetry add lib --optional would either add a field in the extras section automatically or suggest adding a field into extras (like "to add as an extra, add lib = ["lib"] to [tool.poetry.extras]" or something), or at a minimum have a section in the docs on how to have "extras".

edit: nvm the extras does describe how to add, but i'd still like to have an cli option to add a new section automatically when add --optional (like add --peer?)

[funkyfuture]

@xsduan that result in something like this, right?

[tool.poetry.dependencies]
python = ">=3.6"
requests = {version = "^2.21",optional = true}

[tool.poetry.extras]
https-loader = ["requests"]

[mozartilize]

here is my example:

when I add gunicorn to deploy extras via poetry add gunicorn --optional --extras deploy, it adds to pyproject.toml like this

$ cat pyproject.toml
[tool.poetry]
name = "..."
version = "0.1.0"
description = ""
authors = ["..."]
license = "MIT"

[tool.poetry.dependencies]
python = "^3.6"
uvicorn = "^0.7.1"
wsproto = "^0.14.0"
gunicorn = {version = "^19.9",optional = true,extras = ["deploy"]}

[tool.poetry.dev-dependencies]

[build-system]
requires = ["poetry>=0.12"]
build-backend = "poetry.masonry.api"

As we see extras is in attribute, not in section and I think it's a bug.

When run install

$ poetry install -E deploy
Installing dependencies from lock file
                                    
[ValueError]         
Extra [deploy] is not specified.  
                                    
install [--no-dev] [--dry-run] [-E|--extras EXTRAS] [--develop DEVELOP]

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