def built

ezx@1.11.0.0 · src/sha/dump.bend:104

import Base

104# the tree's node, or the walk stopped when the listing made none
105def built(got: Maybe<&2, String>, +path: String) -> IO(String):
106  match got:
107    case None{}:
108      IO.die(String, 1, "ez: nar hash: " ++ path ++ ": the listing does not make a tree")
109    case Some{node}:
110      IO.pure(String, node)