revert to 1.0 poetry

Author: AbstractUmbra

pyproject.toml

@@ -38,10 +38,7 @@ sphinx = { version = "^4.0.0", optional = true }
 sphinxcontrib-trio = { version = "*", optional = true }
 furo = { version = "*", optional = true }
 
-[tool.poetry.group.dev]
-optional = true
-
-[tool.poetry.group.dev.dependencies]
+[tool.poetry.dev-dependencies]
 black = "*"
 
 [tool.poetry.extras]
@@ -74,5 +71,5 @@ reportUnusedClass = "error"
 reportUnusedFunction = "error"
 
 [build-system]
-requires = ["poetry>=1.2.0b3"]
+requires = ["poetry>=1.0"]
 build-backend = "poetry.masonry.api"