lint: fix semantic bugs in codebase

src/poetry/mixology/incompatibility.py

@@ -176,12 +176,6 @@ class Incompatibility:
 
         if len(self._terms) == 1:
             term = self._terms[0]
-            if term.constraint.is_any():
-                return "{} is {}".format(
-                    term.dependency.name,
-                    "forbidden" if term.is_positive() else "required",
-                )
-            else:
             return "{} is {}".format(
                 term.dependency.name,
                 "forbidden" if term.is_positive() else "required",

src/poetry/utils/env.py

@@ -1719,8 +1719,6 @@ class GenericEnv(VirtualEnv):
                     if pip_executable.endswith(".exe"):
                         pip_executable = pip_executable[:-4]
 
-                    pip_executable = pip_executable
-
             if python_executable:
                 self._executable = python_executable
 

tests/console/commands/plugin/test_remove.py

@@ -68,16 +68,16 @@ def install_plugin(env: "MockEnv", installed: "Repository", pyproject: None) ->
         tomlkit.dumps(lock_content), encoding="utf-8"
     )
 
-    pyproject = tomlkit.loads(
+    pyproject_toml = tomlkit.loads(
         env.path.joinpath("pyproject.toml").read_text(encoding="utf-8")
     )
-    content = pyproject["tool"]["poetry"]
+    content = pyproject_toml["tool"]["poetry"]
 
     dependency_section = content["dependencies"]
     dependency_section["poetry-plugin"] = "^1.2.3"
 
     env.path.joinpath("pyproject.toml").write_text(
-        tomlkit.dumps(pyproject), encoding="utf-8"
+        tomlkit.dumps(pyproject_toml), encoding="utf-8"
     )
 
     installed.add_package(Package("poetry-plugin", "1.2.3"))

tests/installation/test_executor.py

@@ -19,7 +19,6 @@ from poetry.core.packages.package import Package
 from poetry.core.packages.utils.link import Link
 from poetry.core.utils._compat import PY36
 
-from poetry.config.config import Config
 from poetry.installation.executor import Executor
 from poetry.installation.operations import Install
 from poetry.installation.operations import Uninstall
@@ -35,6 +34,7 @@ if TYPE_CHECKING:
     from httpretty.core import HTTPrettyRequest
     from pytest_mock import MockerFixture
 
+    from poetry.config.config import Config
     from poetry.utils.env import VirtualEnv
     from tests.types import FixtureDirGetter
 
@@ -103,7 +103,7 @@ def mock_file_downloads(http: Type["httpretty.httpretty"]) -> None:
 
 def test_execute_executes_a_batch_of_operations(
     mocker: "MockerFixture",
-    config: Config,
+    config: "Config",
     pool: Pool,
     io: BufferedIO,
     tmp_dir: str,
@@ -114,7 +114,6 @@ def test_execute_executes_a_batch_of_operations(
         "poetry.installation.executor.pip_editable_install", unsafe=not PY36
     )
 
-    config = Config()
     config.merge({"cache-dir": tmp_dir})
 
     executor = Executor(env, pool, config, io)
@@ -184,9 +183,8 @@ Package operations: 4 installs, 1 update, 1 removal
 
 
 def test_execute_shows_skipped_operations_if_verbose(
-    config: Config, pool: Pool, io: BufferedIO, config_cache_dir: Path, env: MockEnv
+    config: "Config", pool: Pool, io: BufferedIO, config_cache_dir: Path, env: MockEnv
 ):
-    config = Config()
     config.merge({"cache-dir": config_cache_dir.as_posix()})
 
     executor = Executor(env, pool, config, io)
@@ -209,7 +207,7 @@ Package operations: 0 installs, 0 updates, 0 removals, 1 skipped
 
 
 def test_execute_should_show_errors(
-    config: Config, pool: Pool, mocker: "MockerFixture", io: BufferedIO, env: MockEnv
+    config: "Config", pool: Pool, mocker: "MockerFixture", io: BufferedIO, env: MockEnv
 ):
     executor = Executor(env, pool, config, io)
     executor.verbose()
@@ -233,14 +231,13 @@ Package operations: 1 install, 0 updates, 0 removals
 
 def test_execute_works_with_ansi_output(
     mocker: "MockerFixture",
-    config: Config,
+    config: "Config",
     pool: Pool,
     io_decorated: BufferedIO,
     tmp_dir: str,
     mock_file_downloads: None,
     env: MockEnv,
 ):
-    config = Config()
     config.merge({"cache-dir": tmp_dir})
 
     executor = Executor(env, pool, config, io_decorated)
@@ -273,14 +270,13 @@ def test_execute_works_with_ansi_output(
 
 def test_execute_works_with_no_ansi_output(
     mocker: "MockerFixture",
-    config: Config,
+    config: "Config",
     pool: Pool,
     io_not_decorated: BufferedIO,
     tmp_dir: str,
     mock_file_downloads: None,
     env: MockEnv,
 ):
-    config = Config()
     config.merge({"cache-dir": tmp_dir})
 
     executor = Executor(env, pool, config, io_not_decorated)
@@ -308,7 +304,7 @@ Package operations: 1 install, 0 updates, 0 removals
 
 
 def test_execute_should_show_operation_as_cancelled_on_subprocess_keyboard_interrupt(
-    config: Config, pool: Pool, mocker: "MockerFixture", io: BufferedIO, env: MockEnv
+    config: "Config", pool: Pool, mocker: "MockerFixture", io: BufferedIO, env: MockEnv
 ):
     executor = Executor(env, pool, config, io)
     executor.verbose()
@@ -329,7 +325,7 @@ Package operations: 1 install, 0 updates, 0 removals
 
 
 def test_execute_should_gracefully_handle_io_error(
-    config: Config, pool: Pool, mocker: "MockerFixture", io: BufferedIO, env: MockEnv
+    config: "Config", pool: Pool, mocker: "MockerFixture", io: BufferedIO, env: MockEnv
 ):
     executor = Executor(env, pool, config, io)
     executor.verbose()
@@ -356,7 +352,7 @@ Package operations: 1 install, 0 updates, 0 removals
 
 
 def test_executor_should_delete_incomplete_downloads(
-    config: Config,
+    config: "Config",
     io: BufferedIO,
     tmp_dir: str,
     mocker: "MockerFixture",
@@ -382,7 +378,6 @@ def test_executor_should_delete_incomplete_downloads(
         return_value=Path(tmp_dir),
     )
 
-    config = Config()
     config.merge({"cache-dir": tmp_dir})
 
     executor = Executor(env, pool, config, io)
@@ -420,7 +415,7 @@ def verify_installed_distribution(
 
 
 def test_executor_should_write_pep610_url_references_for_files(
-    tmp_venv: "VirtualEnv", pool: Pool, config: Config, io: BufferedIO
+    tmp_venv: "VirtualEnv", pool: Pool, config: "Config", io: BufferedIO
 ):
     url = (
         Path(__file__)
@@ -439,7 +434,7 @@ def test_executor_should_write_pep610_url_references_for_files(
 
 
 def test_executor_should_write_pep610_url_references_for_directories(
-    tmp_venv: "VirtualEnv", pool: Pool, config: Config, io: BufferedIO
+    tmp_venv: "VirtualEnv", pool: Pool, config: "Config", io: BufferedIO
 ):
     url = Path(__file__).parent.parent.joinpath("fixtures/simple_project").resolve()
     package = Package(
@@ -454,7 +449,7 @@ def test_executor_should_write_pep610_url_references_for_directories(
 
 
 def test_executor_should_write_pep610_url_references_for_editable_directories(
-    tmp_venv: "VirtualEnv", pool: Pool, config: Config, io: BufferedIO
+    tmp_venv: "VirtualEnv", pool: Pool, config: "Config", io: BufferedIO
 ):
     url = Path(__file__).parent.parent.joinpath("fixtures/simple_project").resolve()
     package = Package(
@@ -475,7 +470,7 @@ def test_executor_should_write_pep610_url_references_for_editable_directories(
 def test_executor_should_write_pep610_url_references_for_urls(
     tmp_venv: "VirtualEnv",
     pool: Pool,
-    config: Config,
+    config: "Config",
     io: BufferedIO,
     mock_file_downloads: None,
 ):
@@ -496,7 +491,7 @@ def test_executor_should_write_pep610_url_references_for_urls(
 def test_executor_should_write_pep610_url_references_for_git(
     tmp_venv: "VirtualEnv",
     pool: Pool,
-    config: Config,
+    config: "Config",
     io: BufferedIO,
     mock_file_downloads: None,
 ):
@@ -528,7 +523,7 @@ def test_executor_should_write_pep610_url_references_for_git(
 def test_executor_should_use_cached_link_and_hash(
     tmp_venv: "VirtualEnv",
     pool: Pool,
-    config: Config,
+    config: "Config",
     io: BufferedIO,
     mocker: "MockerFixture",
     fixture_dir: "FixtureDirGetter",
@@ -575,7 +570,7 @@ def test_executor_should_use_cached_link_and_hash(
 def test_executor_should_be_initialized_with_correct_workers(
     tmp_venv: "VirtualEnv",
     pool: Pool,
-    config: Config,
+    config: "Config",
     io: BufferedIO,
     mocker: "MockerFixture",
     max_workers: Optional[int],
@@ -583,7 +578,6 @@ def test_executor_should_be_initialized_with_correct_workers(
     side_effect: Optional[Exception],
     expected_workers: int,
 ):
-    config = Config()
     config.merge({"installer": {"max-workers": max_workers}})
 
     mocker.patch("os.cpu_count", return_value=cpu_count, side_effect=side_effect)

tests/installation/test_installer.py

@@ -2254,7 +2254,6 @@ def test_installer_uses_prereleases_if_they_are_compatible(
 
 
 def test_installer_can_handle_old_lock_files(
-    installer: Installer,
     locker: Locker,
     package: ProjectPackage,
     repo: Repository,

tests/installation/test_installer_old.py

@@ -1867,7 +1867,6 @@ def test_installer_uses_prereleases_if_they_are_compatible(
 
 
 def test_installer_can_handle_old_lock_files(
-    installer: Installer,
     locker: Locker,
     package: ProjectPackage,
     repo: Repository,

tests/puzzle/test_solver.py

@@ -1878,7 +1878,6 @@ def test_solver_can_resolve_directory_dependencies(
 
 
 def test_solver_can_resolve_directory_dependencies_nested_editable(
-    solver: Solver,
     repo: Repository,
     pool: Pool,
     installed: InstalledRepository,
@@ -2552,7 +2551,6 @@ def test_solver_does_not_loop_indefinitely_on_duplicate_constraints_with_extras(
 
 
 def test_solver_does_not_fail_with_locked_git_and_non_git_dependencies(
-    solver: Solver,
     repo: Repository,
     package: Package,
     locked: Repository,