Rewalk.pin: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/rules/pedantic/rewalk.bend as Rewalk
Lines 751-757 of bolt@1.27.0.0/src/rules/pedantic/rewalk.bend: https://jend.leeeet.dev/read.txt?path=bolt@1.27.0.0/src/rules/pedantic/rewalk.bend&start_line=751&end_line=757

import Base

# marked collection arguments become slots
def pin(+ps: List<&2, Pos>, sites: List<&2, Site>) -> List<&2, Site>:
  match sites:
    case Nil{}:
      Nil{}
    case Con{s, rest}:
      pin_one(ps, s) <> pin(ps, rest)

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/rules/pedantic/rewalk.bend&name=Pos
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/rules/pedantic/rewalk.bend&name=Site
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/rules/pedantic/rewalk.bend&name=pin_one