Upgrade.Swap: type of ezx@1.11.0.0
Import: import ezx@1.11.0.0/src/ledger/upgrade.bend as Upgrade
Lines 26-29 of ezx@1.11.0.0/src/ledger/upgrade.bend: https://jend.leeeet.dev/read.txt?path=ezx@1.11.0.0/src/ledger/upgrade.bend&start_line=26&end_line=29

import Base

# one hash that moved, and the hash that replaces it: an import line to
# rewrite, or a committed tree to remove
type Swap is Data:
  Swap{old: String, new: String}

Uses (1):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String