Cyclic dependency between poetry and poetry-plugin-export #6441
Description
poetry-plugin-export v1.0.4 (and earlier) depends on poetry = "^1.2.0b1dev0".
Poetry 1.2.0b2 introduces a dependency on poetry-plugin-export = "^1.0.4".
While this might not be immediately problematic, ideally the directed dependencies graph should remain acyclic. This is already causing trouble in conda-forge/poetry-feedstock#67.