fix: pin attrs to >=20.1.0, change imports

pyproject.toml

@@ -49,7 +49,7 @@ yaml = "nitpick.plugins.yaml"
 [tool.poetry.dependencies]
 python = "^3.7"
 flake8 = ">=3.0.0"
-attrs = "*"
+attrs = ">=20.1.0" # attr.define introduced in this version
 tomlkit = ">=0.8.0" # SingleKey() class introduced in this version
 toml = "*" # TODO: keep only tomlkit if possible, to have only one package to handle TOML
 requests = "*"

src/nitpick/blender.py

@@ -16,7 +16,7 @@
 import jmespath
 import toml
 import tomlkit
-from attrs import define
+from attr import define  # type: ignore[attr-defined]
 from autorepr import autorepr
 from flatten_dict import flatten, unflatten
 from jmespath.parser import ParsedResult

src/nitpick/config.py

@@ -1,5 +1,5 @@
 """Special configurations."""
-from attrs import Factory, define
+from attr import Factory, define  # type: ignore[attr-defined]
 
 from nitpick.typedefs import JsonDict