Config.chain: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/config.bend as Config
Lines 239-247 of bolt@1.27.0.0/src/config.bend: https://jend.leeeet.dev/read.txt?path=bolt@1.27.0.0/src/config.bend&start_line=239&end_line=247

import Base

# the bolt.bend of a resolved directory (innermost first, as `home` gives it)
# and of each parent up to the root, nearest first: `[p3, w]` is
# `/w/p3/bolt.bend`, `/w/bolt.bend`, `/bolt.bend`
def chain(ds: List<&2, String>) -> List<&2, String>:
  match ds:
    case Nil{}:
      ["/bolt.bend"]
    case Con{d, +rest}:
      (root(d <> rest, "") ++ "bolt.bend") <> chain(rest)

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  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=bolt@1.27.0.0/src/config.bend&name=root