Arc.providers: def of near-architecture@0.9.1.0
Import: import near-architecture@0.9.1.0/arc.bend as Arc
Lines 575-581 of near-architecture@0.9.1.0/arc.bend: https://jend.leeeet.dev/read.txt?path=near-architecture@0.9.1.0/arc.bend&start_line=575&end_line=581

import Base

# Keys of the containers that provide `want`.
def providers(+want: Cap, xs: List<&2, Container>) -> List<&2, String>:
  match xs:
    case []:
      []
    case +c <> rest:
      cons_if(Nat.is_gt(count_in(want, caps(c)), 0n), ckey(c), providers(want, rest))

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_gt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=near-architecture@0.9.1.0/arc.bend&name=Cap
  https://jend.leeeet.dev/definition.txt?path=near-architecture@0.9.1.0/arc.bend&name=Container
  https://jend.leeeet.dev/definition.txt?path=near-architecture@0.9.1.0/arc.bend&name=caps
  https://jend.leeeet.dev/definition.txt?path=near-architecture@0.9.1.0/arc.bend&name=ckey
  https://jend.leeeet.dev/definition.txt?path=near-architecture@0.9.1.0/arc.bend&name=cons_if
  https://jend.leeeet.dev/definition.txt?path=near-architecture@0.9.1.0/arc.bend&name=count_in