Fix linting

poetry/installation/installer.py

@@ -4,7 +4,6 @@ from typing import Union
 from clikit.api.io import IO
 from clikit.io import NullIO
 
-from poetry.packages import Dependency
 from poetry.packages import Locker
 from poetry.packages import Package
 from poetry.puzzle import Solver
@@ -16,8 +15,8 @@ from poetry.repositories import Pool
 from poetry.repositories import Repository
 from poetry.repositories.installed_repository import InstalledRepository
 from poetry.semver import parse_constraint
-from poetry.utils.helpers import canonicalize_name
 from poetry.utils.extras import get_extra_package_names
+from poetry.utils.helpers import canonicalize_name
 
 from .base_installer import BaseInstaller
 from .pip_installer import PipInstaller

poetry/masonry/builders/builder.py

@@ -2,6 +2,7 @@
 import re
 import shutil
 import tempfile
+
 from collections import defaultdict
 from contextlib import contextmanager
 from typing import Set
@@ -15,10 +16,12 @@ from poetry.utils._compat import glob
 from poetry.utils._compat import lru_cache
 from poetry.utils._compat import to_str
 from poetry.vcs import get_vcs
+
 from ..metadata import Metadata
 from ..utils.module import Module
 from ..utils.package_include import PackageInclude
 
+
 AUTHOR_REGEX = re.compile(r"(?u)^(?P<name>[- .,\w\d'’\"()]+) <(?P<email>.+?)>$")
 
 METADATA_BASE = """\

poetry/masonry/builders/wheel.py

@@ -10,7 +10,6 @@ import zipfile
 
 from base64 import urlsafe_b64encode
 from io import StringIO
-from typing import Set
 
 from clikit.api.io.flags import VERY_VERBOSE
 

poetry/utils/extras.py

-from typing import Iterator, Mapping, Sequence
+from typing import Collection
+from typing import Iterator
+from typing import Mapping
+from typing import Sequence
 
 from poetry.packages import Package
 from poetry.utils.helpers import canonicalize_name

tests/utils/test_extras.py

 import pytest
 
+from poetry.packages import Package
 from poetry.utils.extras import get_extra_package_names
 
-from poetry.packages import Package
 
 _PACKAGE_FOO = Package("foo", "0.1.0")
 _PACKAGE_SPAM = Package("spam", "0.2.0")