Update formatting and typing

I ran `make` and it fixed/complained about a few things, so I addressed them.

pretf.aws/pretf/aws.py

@@ -183,7 +183,9 @@ def _profile_creds_definitely_supported_by_terraform(creds: Any) -> bool:
 
 @locked
 def export_environment_variables(
-    session: Optional[Session] = None, region_name: Optional[str] = None, **kwargs: dict
+    session: Optional[Session] = None,
+    region_name: Optional[str] = None,
+    **kwargs: Any,
 ) -> None:
     """
     Exports AWS credentials as environment variables.
@@ -214,7 +216,10 @@ def export_environment_variables(
 
 @lru_cache()
 @locked
-def get_account_id(session: Optional[Session] = None, **kwargs: dict) -> str:
+def get_account_id(
+    session: Optional[Session] = None,
+    **kwargs: Any,
+) -> str:
     if session is None:
         session = get_session(**kwargs)
     sts_client = session.client("sts")
@@ -223,19 +228,22 @@ def get_account_id(session: Optional[Session] = None, **kwargs: dict) -> str:
 
 
 @locked
-def get_frozen_credentials(session: Optional[Session] = None, **kwargs: dict) -> Any:
+def get_frozen_credentials(
+    session: Optional[Session] = None,
+    **kwargs: Any,
+) -> Any:
     if session is None:
         session = get_session(**kwargs)
     return session.get_credentials().get_frozen_credentials()
 
 
 @lru_cache()
-def get_session(**kwargs: dict) -> Session:
+def get_session(**kwargs: Any) -> Session:
     return Session(**kwargs)
 
 
 @locked
-def provider_aws(**body: dict) -> Block:
+def provider_aws(**body: Any) -> Block:
     """
     Returns an AWS provider block. If provided, the `profile` option
     may be replaced with temporary credentials for that profile.

pretf/pretf/util.py

@@ -4,6 +4,7 @@
 from contextlib import contextmanager
 from fnmatch import fnmatch
 from importlib.abc import Loader
+from importlib.machinery import ModuleSpec
 from importlib.util import module_from_spec, spec_from_file_location
 from io import StringIO
 from pathlib import Path, PurePath
@@ -76,7 +77,8 @@ def _execute(
 
     if returncode != 0:
         raise CalledProcessError(
-            returncode=returncode, cmd=" ".join(shlex.quote(arg) for arg in args),
+            returncode=returncode,
+            cmd=" ".join(shlex.quote(arg) for arg in args),
         )
 
     return CompletedProcess(args=args, returncode=returncode)
@@ -204,6 +206,7 @@ def import_file(path: Union[PurePath, str]) -> Generator[ModuleType, None, None]
     try:
         name = os.path.basename(path).split(".")[0]
         spec = spec_from_file_location(name, str(path))
+        assert isinstance(spec, ModuleSpec)
         module = module_from_spec(spec)
         assert isinstance(spec.loader, Loader)
         loader: Loader = spec.loader

pretf/pretf/workflow.py

@@ -13,7 +13,10 @@
 from .util import import_file, is_verbose
 
 
-def clean_files(paths: Sequence[Path], verbose: Optional[bool] = None) -> None:
+def clean_files(
+    paths: Sequence[Path],
+    verbose: Optional[bool] = None,
+) -> None:
     """
     Deletes the specified files. Intended for use after `create_files()`.
     Use `delete_files()` if wildcards are required.
@@ -98,7 +101,8 @@ def create_files(
 
 
 def custom(
-    path: Union[PurePath, str], context: Optional[dict] = None
+    path: Union[PurePath, str],
+    context: Optional[dict] = None,
 ) -> CompletedProcess:
     """
     Calls the pretf_workflow() function from the specified Python file.
@@ -123,7 +127,9 @@ def custom(
 
 
 def default(
-    clean: bool = True, created: list = [], verbose: Optional[bool] = None
+    clean: bool = True,
+    created: list = [],
+    verbose: Optional[bool] = None,
 ) -> CompletedProcess:
     """
     This is the default Pretf workflow. This is automatically used when there
@@ -196,7 +202,8 @@ def delete_files(
 
 
 def delete_links(
-    cwd: Optional[Union[Path, str]] = None, verbose: Optional[bool] = None
+    cwd: Optional[Union[Path, str]] = None,
+    verbose: Optional[bool] = None,
 ) -> List[Path]:
     """
     Deletes symlinks from the current directory.
@@ -269,12 +276,18 @@ def execute_terraform(
 
         # This is a valid executable, run it.
         return util.execute(
-            file=terraform_path, args=args, cwd=cwd, capture=capture, verbose=verbose
+            file=terraform_path,
+            args=args,
+            cwd=cwd,
+            env=env,
+            capture=capture,
+            verbose=verbose,
         )
 
     log.bad("terraform: command not found")
     raise CalledProcessError(
-        returncode=1, cmd=" ".join(shlex.quote(arg) for arg in args),
+        returncode=1,
+        cmd=" ".join(shlex.quote(arg) for arg in args),
     )
 
 
@@ -457,7 +470,12 @@ def link_module(
     if source.startswith(".") or source.startswith("/"):
 
         # Modules already on the filesystem can be used directly.
-        paths.extend(util.find_paths(path_patterns=["*"], cwd=source,))
+        paths.extend(
+            util.find_paths(
+                path_patterns=["*"],
+                cwd=source,
+            )
+        )
 
     else: