Nar.joined: def of ezx@1.11.0.0
Import: import ezx@1.11.0.0/src/sha/nar.bend as Nar
Lines 261-267 of ezx@1.11.0.0/src/sha/nar.bend: https://jend.leeeet.dev/read.txt?path=ezx@1.11.0.0/src/sha/nar.bend&start_line=261&end_line=267

import Base

# fields as the listing prints them, each ended by a NUL
def joined(fs: List<&2, String>) -> String:
  match fs:
    case []:
      ""
    case h <> t:
      String.append(h, SCon{nul(), joined(t)})

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=ezx@1.11.0.0/src/sha/nar.bend&name=nul