Use shared HAS_RICH constant in typer.core

Author: nathanjmcdougall

typer/cli.py

@@ -10,8 +10,7 @@
 from click import Command, Group, Option
 
 from . import __version__
-
-HAS_RICH = importlib.util.find_spec("rich") is not None
+from .core import HAS_RICH
 
 default_app_names = ("app", "cli", "main")
 default_func_names = ("main", "cli", "app")

typer/main.py

@@ -22,6 +22,7 @@
 from .completion import get_completion_inspect_parameters
 from .core import (
     DEFAULT_MARKUP_MODE,
+    HAS_RICH,
     MarkupMode,
     TyperArgument,
     TyperCommand,
@@ -50,9 +51,6 @@
 )
 from .utils import get_params_from_function
 
-HAS_RICH = importlib.util.find_spec("rich") is not None
-
-
 _original_except_hook = sys.excepthook
 _typer_developer_exception_attr_name = "__typer_developer_exception__"