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Within LTS Haskell 24.16 (ghc-9.10.3)
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getEnvDefault :: String -> String -> IO Stringunix System.Posix.Env getEnvDefault is a wrapper around getEnv where the programmer can specify a fallback if the variable is not found in the environment.
getEnvironment :: IO [(String, String)]unix System.Posix.Env getEnvironment retrieves the entire environment as a list of (key,value) pairs.
getEnvironmentPrim :: IO [String]unix System.Posix.Env No documentation available.
getEnvDefault :: ByteString -> ByteString -> IO ByteStringunix System.Posix.Env.ByteString getEnvDefault is a wrapper around getEnv where the programmer can specify a fallback as the second argument, which will be used if the variable is not found in the environment.
getEnvironment :: IO [(ByteString, ByteString)]unix System.Posix.Env.ByteString getEnvironment retrieves the entire environment as a list of (key,value) pairs.
getEnvironmentPrim :: IO [ByteString]unix System.Posix.Env.ByteString No documentation available.
getEnvDefault :: PosixString -> PosixString -> IO PosixStringunix System.Posix.Env.PosixString getEnvDefault is a wrapper around getEnv where the programmer can specify a fallback as the second argument, which will be used if the variable is not found in the environment.
getEnvironment :: IO [(PosixString, PosixString)]unix System.Posix.Env.PosixString getEnvironment retrieves the entire environment as a list of (key,value) pairs.
getEnvironmentPrim :: IO [PosixString]unix System.Posix.Env.PosixString No documentation available.
getEnvironment :: MonadIO m => m [(String, String)]unliftio UnliftIO.Environment Lifted getEnvironment.