content: {-# LANGUAGE Safe #-}
  
  -- |
  -- Module      :  System.Environment.Blank
  -- Copyright   :  (c) Habib Alamin 2017
  -- License     :  BSD-style (see the file libraries/base/LICENSE)
  --
  -- Maintainer  :  libraries@haskell.org
  -- Stability   :  provisional
  -- Portability :  portable
  --
  -- A setEnv implementation that allows blank environment variables. Mimics
  -- the `System.Posix.Env` module from the @unix@ package, but with support
  -- for Windows too.
  --
  -- The matrix of platforms that:
  --
  --   * support @putenv("FOO")@ to unset environment variables,
  --   * support @putenv("FOO=")@ to unset environment variables or set them
  --     to blank values,
  --   * support @unsetenv@ to unset environment variables,
  --   * support @setenv@ to set environment variables,
  --   * etc.
  --
  -- is very complicated. Some platforms don't support unsetting of environment
  -- variables at all.
  --
  
  module System.Environment.Blank
      (
        module System.Environment,
        getEnv,
        getEnvDefault,
        setEnv,
        unsetEnv,
    ) where
  
  import System.Environment
      (
        getArgs,
        getProgName,
        getExecutablePath,
        withArgs,
        withProgName,
        getEnvironment
      )
  
  import GHC.Internal.System.Environment.Blank
  