`XMonad.Prelude` incompatible with ghc 9.8's `base`

[brandon s allbery kf8nh]

Problem Description

XMonad.Prelude needs revision for the base that ships with ghc 9.8.

[ 31 of 312] Compiling XMonad.Prelude   ( XMonad/Prelude.hs, dist/build/XMonad/Prelude.o, dist/build/XMonad/Prelude.dyn_o )

XMonad/Prelude.hs:18:5: error: [GHC-69158]
    Conflicting exports for ‘unzip’:
       ‘module Exports’ exports ‘Exports.unzip’
         imported from ‘Data.Functor’ at XMonad/Prelude.hs:50:1-37
       ‘module Exports’ exports ‘Exports.unzip’
         imported from ‘Data.List’ at XMonad/Prelude.hs:51:1-37
         (and originally defined in ‘GHC.List’)
   |
18 |     module Exports,
   |     ^^^^^^^^^^^^^^

XMonad/Prelude.hs:22:5: error: [GHC-87543]
    Ambiguous occurrence ‘!?’.
    It could refer to
       either ‘Exports.!?’,
              imported from ‘Data.List’ at XMonad/Prelude.hs:51:1-37
              (and originally defined in ‘GHC.List’),
           or ‘XMonad.Prelude.!?’, defined at XMonad/Prelude.hs:84:1.
   |
22 |     (!?),
   |     ^^^^

Steps to Reproduce

Try to build xmonad-contrib with the ghc 9.8 prerelease.

Checklist

• I've read CONTRIBUTING.md

• I tested my configuration

  • With xmonad version 0.17.2.9 (commit 5c2ba06 if using git)
  • With xmonad-contrib version 0.17.1.9 (commit 2df26cf if using git)

[brandon s allbery kf8nh]

We may also want to disable -Wx-partial which complains about head and tail among other things throughout the codebase.

[Tony Zorman]

XMonad.Prelude needs revision for the base that ships with ghc 9.8.

Mh, I guess some CPP it necessary here :/

We may also want to disable -Wx-partial which complains about head and tail among other things throughout the codebase.

A more ambitious goal would be to fix all of these occurences, of course :)