Env.var: def of ezx@1.11.0.0
Import: import ezx@1.11.0.0/src/share/env.bend as Env
Lines 14-18 of ezx@1.11.0.0/src/share/env.bend: https://jend.leeeet.dev/read.txt?path=ezx@1.11.0.0/src/share/env.bend&start_line=14&end_line=18

import Base
import ezx@1.11.0.0/src/share/args.bend as Args

# what a variable holds, with a default for when it holds nothing
def var(name: String, +alt: String) -> IO(String):
  do IO<String>:
    r : Result<&1, &1, U32 & String, String> <- IO.get_env(name)
    return or_else(Args.text_of(r), alt)

Uses (10):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO.bind
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO.get_env
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO.pure
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=ezx@1.11.0.0/src/share/args.bend&name=text_of
  https://jend.leeeet.dev/definition.txt?path=ezx@1.11.0.0/src/share/env.bend&name=or_else