Support GHC 9.2

[andreasabel]

Latest aeson-2 is currently rejected because of bounds on ghc-prim and template-haskell.

Blocking:

• Agda (Support GHC 9.2 agda/agda#5442)
• BNFC (Support GHC 9.2 BNFC/bnfc#398)

[bergmark]

I'll file a PR for this

[bergmark]

Or perhaps not yet, @phadej the test-suite is blocked on quickcheck-instances => time-compat => splitmix (looks like it goes even deeper!)

[bergmark]

Heh, and our library is blocked on pretty much every dependency. Need to hold off on this for a while!

[andreasabel]

NB: splitmix is already operational:

• cabal install fails for ghc 9.2.1 haskellari/splitmix#61

[andreasabel]

With ghc-prim and template-haskell relaxed, the library aeson-2.0.1.0 (master branch) builds fine. But aeson-tests fails with:

Building test suite 'aeson-tests' for aeson-2.0.1.0..
...
[ 5 of 23] Compiling Types            ( tests/Types.hs, ... )

tests/Types.hs:21:24: error:
    Module ‘Data.Semigroup’ does not export ‘Option’
   |
21 | import Data.Semigroup (Option)
   |                        ^^^^^^

Looks like the dependencies are fine now!

UPDATE: I see that there is draft PR #856 to fix GHC 9.2 build.

[andreasabel]

@bergmark Can PR #856 maybe help to fix this issue?

[phadej]

#856, is a good start, but I'm waiting for hashable-1.4 compatible unordered-containers release to get everything done at once. This library is not abandoned.

[vmchale]

@andreasabel also blocking microstache and thus criterion!

[andreasabel]

Fixed by the release of aeson-2.0.2.0 (although the https://hackage.haskell.org/package/aeson-2.0.2.0/changelog is silent about it).

Thanks, @phadej and @awjchen!