579         if upgrade_op.backup_store:

   579         if upgrade_op.backup_store:

   580             # The lock file from the old store won't be removed because nothing has a

   580             # The lock file from the old store won't be removed because nothing has a

   581             # reference to its new location. So clean it up manually. Alternatively, we

   581             # reference to its new location. So clean it up manually. Alternatively, we

   582             # could update srcrepo.svfs and other variables to point to the new

   582             # could update srcrepo.svfs and other variables to point to the new

   583             # location. This is simpler.

   583             # location. This is simpler.

   584             backupvfs.unlink(b'store/lock')

   585             backupvfs.unlink(b'store/lock')

   585 

   586 

   586     return backuppath

   587     return backuppath