Cabal complains about TypeAbstractions #9496
Description
As I understand it GHC 9.8.1 should work well with cabal 3.10.2.1, and indeed I've those versions:
$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 9.8.1
$ cabal --version
cabal-install version 3.10.2.1
compiled using version 3.10.2.0 of the Cabal library
But I'm getting:
$ cabal check
Warning: The following warnings are likely to affect your build negatively:
Warning: Unknown extensions: TypeAbstractions, TypeAbstractions,
TypeAbstractions, TypeAbstractions, TypeAbstractions, TypeAbstractions
...
The cabal file under question is: https://github.com/LeventErkok/sbv/blob/master/sbv.cabal
TypeAbstractions is in a conditional stanza (https://github.com/LeventErkok/sbv/blob/48f39ce0666b976ebba559cc27a55a3c41d2fcc0/sbv.cabal#L79-L81), but I don't think that matters. Cabal still complains the same if I move it out of the conditional part.