I've been using poetry export to generate a constraints file for use with pip. Sometime after the poetry 1.2.0a2 and poetry-core 1.1.0a7 releases, this command is now includes extras in its output such as docker[ssh]==6.0.0 which is not supported in pip constraints files.

Would you be open to at least adding an option to change this behavior? The easiest to implement would probably be something like a --no-extras flag (which may need a better name to avoid confusion with --extras). Another option would be to add support for a constraints.txt format.