BackupIo.start: def of mylsm-lsm-store@0.6.0.1
Import: import mylsm-lsm-store@0.6.0.1/src/transfer/BackupIo.bend as BackupIo
Lines 252-260 of mylsm-lsm-store@0.6.0.1/src/transfer/BackupIo.bend: https://jend.leeeet.dev/read.txt?path=mylsm-lsm-store@0.6.0.1/src/transfer/BackupIo.bend&start_line=252&end_line=260

import Base
import mylsm-lsm-store@0.6.0.1/src/transfer/Backup.bend as Backup
import mylsm-lsm-store@0.6.0.1/src/Fs.bend as Fs

# Stages a backup bundle and publishes it without replacing an existing path.
def start(+destination: String, stream: Backup.Stream) -> IO(Result<&1, &1, Error, Unit>):
  match stream:
    case Backup.Stream{_, _, _, +block_count, _}:
      +temporary = destination ++ ".backup-060.tmp"
      do IO<Result<&1, &1, Error, Unit>>:
        exists : Result<&1, &1, U32 & String, Bool> <- Fs.exists(path.clone(destination))
        destination.checked(destination, temporary, exists, stream,
          Backup.write_fuel(U32.to_nat(block_count)))

Uses (16):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO.bind
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.append
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.to_nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Unit
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/Fs.bend&name=exists
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/transfer/Backup.bend&name=Stream
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/transfer/Backup.bend&name=write_fuel
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/transfer/BackupIo.bend&name=Error
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/transfer/BackupIo.bend&name=destination.checked
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/transfer/BackupIo.bend&name=path.clone