fix with make

src/textual/constants.py

@@ -119,7 +119,7 @@ def _get_textual_animations() -> AnimationLevel:
 ESCAPE_DELAY: float = _get_environ_int("ESCDELAY", 100) / 1000.0
 """The delay (in seconds) before reporting an escape key (not used if the extend key protocol is available)."""
 
-SLOW_THRESHOLD: int = _get_environ_int('TEXTUAL_SLOW_THRESHOLD', 500)
+SLOW_THRESHOLD: int = _get_environ_int("TEXTUAL_SLOW_THRESHOLD", 500)
 """The time threshold (in milliseconds) after which a warning is logged 
 if message processing exceeds this duration.
 """