{-# LANGUAGE NoImplicitPrelude #-}

{-|
Module      : Stack.Types.WantedCompilerSetter
License     : BSD-3-Clause
-}

module Stack.Types.WantedCompilerSetter
  ( WantedCompilerSetter (..)
  ) where

import           Stack.Prelude

-- | Type representing ways that a wanted compiler is set.
data WantedCompilerSetter
  = CompilerAtCommandLine
    -- ^ At the command line with --compiler option.
  | SnapshotAtCommandLine
    -- ^ At the command line with --snapshot or (deprecated) --resolver option.
  | YamlConfiguration (Maybe (Path Abs File))
    -- ^ Via a configuration file.
  deriving Show