Joint.firsts: def of ezx@1.11.0.0
Import: import ezx@1.11.0.0/src/ws/joint.bend as Joint
Lines 119-125 of ezx@1.11.0.0/src/ws/joint.bend: https://jend.leeeet.dev/read.txt?path=ezx@1.11.0.0/src/ws/joint.bend&start_line=119&end_line=125

import Base
import ezx@1.11.0.0/src/ledger/manifest.bend as M
import ezx@1.11.0.0/src/ledger/render.bend as Rend

# every dependency, each name once, at its first declaration
def firsts(ds: List<&2, M.Dep>) -> List<&2, M.Dep>:
  match ds:
    case []:
      []
    case +hd <> tl:
      hd <> Rend.without(firsts(tl), M.dep.name(hd))

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=ezx@1.11.0.0/src/ledger/manifest.bend&name=Dep
  https://jend.leeeet.dev/definition.txt?path=ezx@1.11.0.0/src/ledger/manifest.bend&name=dep.name
  https://jend.leeeet.dev/definition.txt?path=ezx@1.11.0.0/src/ledger/render.bend&name=without