content: {-
  waymonad A wayland compositor in the spirit of xmonad
  Copyright (C) 2018  Markus Ongyerth
  
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
  
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
  
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  
  Reach us at https://github.com/ongy/waymonad
  -}
  {-|
  Module      : Startup.Environment
  Description : Allows to set environment variables on startup.
  Maintainer  : ongy
  Stability   : testing
  Portability : Linux
  -}
  module Waymonad.Actions.Startup.Environment
  where
  
  import Control.Monad.IO.Class (liftIO)
  import System.Environment (setEnv)
  
  import Graphics.Wayland.Server (DisplayServer)
  
  import Waymonad.Start (Bracketed (..))
  
  {- | Set environment variables on startup.
  
  This happens early enough to be used by wlroots/backend stuff.
  
  @
      envBracket [(\"PULSE_SERVER\", "zelda.ongy")]
  @
  -}
  envBracket :: [(String, String)] -> Bracketed vs DisplayServer ws
  envBracket xs = Bracketed
      (\_ -> liftIO (mapM_ (uncurry setEnv) xs))
      (\_ -> pure ())
  