Fixed logging under live macOS

scripts/wk/log.py

@@ -13,7 +13,10 @@ from wk.io import non_clobber_path
 
 
 # STATIC VARIABLES
-if os.name == 'nt':
+if os.path.exists('/.wk-live-macos'):
+  # Workaround for live macOS env
+  DEFAULT_LOG_DIR = '/var/log/WizardKit'
+elif os.name == 'nt':
   # Example: "C:\WK\1955-11-05\WizardKit"
   DEFAULT_LOG_DIR = (
     f'{os.environ.get("SYSTEMDRIVE", "C:")}/'