simple eval plugin should respect extension pragmas in file

[codygman]

Steps to reproduce

Tell us how to reproduce this issue.

Create a stack project and update Main.hs to:

{-# LANGUAGE OverloadedStrings #-}
module Main where

import Data.ByteString.Lazy.Char8

myByteString :: ByteString
myByteString = "my "

-- >>> myByteString <> "stuff"

main :: IO ()
main = pure ()

Expected behaviour

OverloadedStrings should take effect in the inline code evaluation context resulting in:

{-# LANGUAGE OverloadedStrings #-}
module Main where

import Data.ByteString.Lazy.Char8

myByteString :: ByteString
myByteString = "my "

-- >>> myByteString <> "stuff"
-- "my stuff"

main :: IO ()
main = pure ()

Actual behaviour

An error indicating the inline evaluation context doesn't respect OverloadedStrings. I've also verified it doesn't work with others like DeriveGeneric and TypeApplications.

{-# LANGUAGE OverloadedStrings #-}
module Main where

import Data.ByteString.Lazy.Char8

myByteString :: ByteString
myByteString = "my "

-- >>> myByteString <> "stuff"
-- Couldn't match expected type ‘ByteString’ with actual type ‘[Char]’

main :: IO ()
main = pure ()

[pepeiborra]

Thanks for the bug report. I thought this was already fixed by #322
What version are you using?

[pepeiborra]

closing as this is already fixed in 0.4.0