old_contents: import os
  
  # pylint: disable=unused-wildcard-import,unused-import,wildcard-import
  
  SRC_DIR = os.path.dirname(os.path.abspath(__file__)) # elife-builder/src/
  
  # once called 'THIS_DIR', now deprecated as confusing.
  PROJECT_DIR = os.path.dirname(SRC_DIR)    # elife-builder/
  
  from cfn import *
  
  import aws
  import metrics
  import tasks
  import master
  import askmaster
  import buildvars
  import project
  from deploy import switch_revision_update_instance
  from lifecycle import start, stop, restart, stop_if_running_for, update_dns
  import masterless
  import fixtures
  import vault
  
new_contents: import os
  
  # pylint: disable=unused-wildcard-import,unused-import,wildcard-import
  
  SRC_DIR = os.path.dirname(os.path.abspath(__file__)) # elife-builder/src/
  
  # once called 'THIS_DIR', now deprecated as confusing.
  PROJECT_DIR = os.path.dirname(SRC_DIR)    # elife-builder/
  
  from cfn import *
  
  import aws
  import metrics
  import tasks
  import master
  import askmaster
  import buildvars
  import project
  from deploy import switch_revision_update_instance
  from lifecycle import start, stop, restart, stop_if_running_for, update_dns
  import masterless
  import vault
  
subject: Remove import of dead module