Use implicit Prelude (#6187)

* Use implicit Prelude

The previous behavior was introduced as a fix for #4464. It seems that
this change alone did not fix the issue, and `stack ghci` and `cabal
repl` only work with GHC 8.4.1 or newer, as no custom Prelude is loaded
for these versions. Given this, it seems cleaner to revert to the
implicit Prelude.

* PandocMonad: remove outdated check for base version

Only base versions 4.9 and later are supported, the check for
`MIN_VERSION_base(4,8,0)` is therefore unnecessary.

* Always use custom prelude

Previously, the custom prelude was used only with older GHC versions, as
a workaround for problems with ghci. The ghci problems are resolved by
replacing package `base` with `base-noprelude`, allowing for consistent
use of the custom prelude across all GHC versions.

2 files changed, 0 insertions, 4 deletions

diff --git a/src/Text/Pandoc/Writers/Powerpoint/Output.hs b/src/Text/Pandoc/Writers/Powerpoint/Output.hs
index 1dcd43305..b92494602 100644
--- a/src/Text/Pandoc/Writers/Powerpoint/Output.hs
+++ b/src/Text/Pandoc/Writers/Powerpoint/Output.hs
@@ -1,5 +1,4 @@
 {-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE PatternGuards #-}
 {- |
    Module      : Text.Pandoc.Writers.Powerpoint.Output
@@ -17,7 +16,6 @@ Text.Pandoc.Writers.Powerpoint.Presentation) to a zip archive.
 module Text.Pandoc.Writers.Powerpoint.Output ( presentationToArchive
                                              ) where
 
-import Prelude
 import Control.Monad.Except (throwError, catchError)
 import Control.Monad.Reader
 import Control.Monad.State
diff --git a/src/Text/Pandoc/Writers/Powerpoint/Presentation.hs b/src/Text/Pandoc/Writers/Powerpoint/Presentation.hs
index fc17a954e..84e7423ac 100644
--- a/src/Text/Pandoc/Writers/Powerpoint/Presentation.hs
+++ b/src/Text/Pandoc/Writers/Powerpoint/Presentation.hs
@@ -1,4 +1,3 @@
-{-# LANGUAGE NoImplicitPrelude          #-}
 {-# LANGUAGE OverloadedStrings          #-}
 {-# LANGUAGE PatternGuards              #-}
 {-# LANGUAGE ViewPatterns               #-}
@@ -43,7 +42,6 @@ module Text.Pandoc.Writers.Powerpoint.Presentation ( documentToPresentation
                                                    ) where
 
 
-import Prelude
 import Control.Monad.Reader
 import Control.Monad.State
 import Data.List (intercalate)