• I have searched the issues of this repo and believe that this is not a duplicate.

Issue

Poetry supports including files in only the sdist or wheel by writing:

[tool.poetry]
include = [
    { path = "filename", format = "sdist" }  # or `format = "wheel"`
]

However, this feature is not documented in the section on "include and exclude" in pyproject.toml (or, seemingly, anywhere else).