Sys.sys.env: def of ezsys@0.1.0.0
Import: import ezsys@0.1.0.0/src/sys.bend as Sys
Lines 159-162 of ezsys@0.1.0.0/src/sys.bend: https://jend.leeeet.dev/read.txt?path=ezsys@0.1.0.0/src/sys.bend&start_line=159&end_line=162

import Base
import ezsys@0.1.0.0/src/step.bend as Step

# an environment variable, or the fallback when it is unset
def sys.env(name: String, fallback: String) -> IO(String):
  IO.bind(Result<&1, &1, U32 & String, String>, String, IO.get_env(name),
    res => IO.pure(String, Step.env.pick(res, fallback)))

Uses (9):
  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=ezsys@0.1.0.0/src/step.bend&name=env.pick