update typer to v0.9.0 and use Annotated type hint

pyproject.toml

@@ -28,7 +28,8 @@ pythontemplate = "pythontemplate.cli.main:run_app"
 [tool.poetry.dependencies]
 # Be as loose as possible if writing a library.
 python = "^3.8"
-typer = ">=0.7.0"
+typer = ">=0.9.0"
+typing-extensions = "^4.7.1"
 
 [tool.poetry.group.docs.dependencies]
 sphinx = "~6.2.1"

pythontemplate/__main__.py

@@ -1,3 +1,3 @@
 from .cli.main import run_app
 
-run_app(prog_name="pythontemplate")
+run_app()

pythontemplate/cli/main.py

@@ -1,5 +1,6 @@
 import typer
 from typer import Option
+from typing_extensions import Annotated
 
 import pythontemplate
 
@@ -18,16 +19,18 @@ def version_callback(value: bool):
 @app.callback()
 def common(
     ctx: typer.Context,
-    version: bool = Option(
-        None,
-        "--version",
-        "-v",
-        callback=version_callback,
-        help="Print pythontemplate version.",
-    ),
+    version: Annotated[
+        bool,
+        Option(
+            "--version",
+            "-v",
+            callback=version_callback,
+            help="Print gnwmanager version.",
+        ),
+    ] = False,
 ):
     pass
 
 
-def run_app(*args, **kwargs):
-    app(*args, **kwargs)
+def run_app():
+    app(prog_name="pythontemplate")