#20991 Support Python Poetry dev dependency group Issue created by voyc-cameron Is your feature request related to a problem? Please describe. poetry has supported a new notation/syntax for defining development dependencies since version 1.2.0 (currently version 1.8). The old style

tool.poetry.dev-dependencies

does not seem to be supported any more in newer versions of

poetry

and the new style

tool.poetry.group.dev.dependencies

should be supported in

pants

instead. Currently, using the new style group notation causes the development dependencies to be packaged within the PEX binary file which is undesirable for the production environment. Whereas, we are unable to use the latest version of

poetry

with the old syntax. Describe the solution you'd like Update the

pyproject.toml

parsing logic in pants/src/python/pants/backend/python/macros/poetry_requirements.py Line 364 in </pantsbuild/pants/commit/53d6ad0b3c18a901b0eb1cdb6ec00ba371faed44|53d6ad0> to isolate and add the dev dependency group to the

dev_dependencies

collection variable. Describe alternatives you've considered alternatively, update the

poetry_requirements

target to allow ignoring OF certain dependency groups (

dev

in this case). Additional context None pantsbuild/pants