Par.par.plan: def of snap@1.5.0.0
Import: import snap@1.5.0.0/src/par.bend as Par
Lines 41-45 of snap@1.5.0.0/src/par.bend: https://jend.leeeet.dev/read.txt?path=snap@1.5.0.0/src/par.bend&start_line=41&end_line=45

import Base

# what the `par` effect is handed: how many may run at once, how many gigabytes
# each was given, where they write, the second they must all be finished by,
# and then every job's fields, all joined on NUL
def par.plan(js: List<&2, List<&2, String>>, width: String, gb: String, at: String, by: String) -> String:
  String.join(width <> gb <> at <> by <> par.fields(js), "\0")

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.join
  https://jend.leeeet.dev/definition.txt?path=snap@1.5.0.0/src/par.bend&name=par.fields