Don't include UTF-8s and support NONITERACTIVE environment flag

Author: mangelajo

packages/jumpstarter/jumpstarter/client/lease.py

@@ -1,4 +1,5 @@
 import logging
+import os
 import sys
 from collections.abc import AsyncGenerator, Generator
 from contextlib import (
@@ -141,10 +142,8 @@ async def _acquire(self):
                         if condition_true(result.conditions, "Ready"):
                             logger.debug("Lease %s acquired", self.name)
                             spinner.update_status(f"✅ Lease {self.name} acquired successfully!")
-                            # Small delay to show success message
-                            await sleep(0.5)
                             self.exporter_name = result.exporter
-                            return self
+                            break
 
                         # lease unsatisfiable
                         if condition_true(result.conditions, "Unsatisfiable"):
@@ -176,6 +175,8 @@ async def _acquire(self):
                         for _ in range(5):
                             await sleep(1)
                             spinner.tick()
+            return self
+
         except TimeoutError:
             logger.debug(f"Lease {self.name} acquisition timed out after {self.acquisition_timeout} seconds")
             raise LeaseError(
@@ -305,9 +306,13 @@ def __init__(self, lease_name: str | None = None):
         self.console = Console()
         self.spinner = None
         self.start_time = None
-        self._should_show_spinner = self._is_terminal_available()
+        self._should_show_spinner = self._is_terminal_available() and not self._is_non_interactive()
         self._current_message = None
 
+    def _is_non_interactive(self) -> bool:
+        """Check if the user desires a NONINTERACTIVE environment."""
+        return os.environ.get("NONINTERACTIVE", "false").lower() in ["true", "1"]
+
     def _is_terminal_available(self) -> bool:
         """Check if we're running in a terminal/TTY."""
         return (