Cli.env.first: def of shake@0.7.0.0
Import: import shake@0.7.0.0/src/cli.bend as Cli
Lines 1678-1684 of shake@0.7.0.0/src/cli.bend: https://jend.leeeet.dev/read.txt?path=shake@0.7.0.0/src/cli.bend&start_line=1678&end_line=1684

import Base

# the first of two answers that is one
def env.first(here: Maybe<&2, Var>, rest: Maybe<&2, Var>) -> Maybe<&2, Var>:
  match here:
    case None{}:
      rest
    case Some{pp}:
      Some{pp}

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=shake@0.7.0.0/src/cli.bend&name=Var