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* PandocMonad: remove outdated check for base version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.

1 files changed, 0 insertions, 2 deletions

diff --git a/src/Text/Pandoc/Writers/FB2.hs b/src/Text/Pandoc/Writers/FB2.hs
index 3a079722c..0a64c3bef 100644
--- a/src/Text/Pandoc/Writers/FB2.hs
+++ b/src/Text/Pandoc/Writers/FB2.hs
@@ -1,4 +1,3 @@
-{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE PatternGuards     #-}
 {-# LANGUAGE OverloadedStrings #-}
 {- |
@@ -19,7 +18,6 @@ FictionBook is an XML-based e-book format. For more information see:
 -}
 module Text.Pandoc.Writers.FB2 (writeFB2)  where
 
-import Prelude
 import Control.Monad (zipWithM)
 import Control.Monad.Except (catchError)
 import Control.Monad.State.Strict (StateT, evalStateT, get, gets, lift, liftM, modify)