Typeable Instances Seem Necessary in ghc9.8.2

[Montmorency]

I'm trying to compile amazonka with ghc9.8.2 and haskell-updates version of nixpkgs and I was required to add 'Typeable a' and Typeable (AWSResponse a) constraints to a number of function in order to compile. PR.

[endgame]

I need to know what revisions of Amazonka and nixpkgs you are using. A full Nix expression showing the build you are trying to perform would be best.

Note that nixpkgs builds its Haskell package set from Hackage release, starting with a Stackage snapshot. This means that at best you'll have Amazonka 2.0 which does not support GHC 9.8 at all (due to a change in the way DuplicateRecordFields is handled).

Git main has been fixed, so you'll need a Nix expression that gets amazonka-core, amazonka, and any service bindings you need from the git repo.

[Montmorency]

Hey thanks! amazonka rev = "fbc91ee7d0434b7614e3fe8de993348a4c6ca7a3"; and nixpkgs="github:NixOS/nixpkgs?rev=54b4bb956f9891b872904abdb632cea85a033ff2" ghc-9.8.2

I was actually overriding the hackage version in my nix build (because of the issue you mentioned with DuplicateRecordFields could not build with GHC 9.8) in -sts and -sso which is how I came across these errors in the first place. When I built from main and added these instances I could get everything to compile (had to also override micro-lens pro as its marked broken in nixpkgs) .

Re: the hackage version. What is the process for uploading a new Version 2.1 to Hackage? This would be cut from latest master with the DuplicateRecordFields fix (and others e.g. microlens dependencies etc.)? Then amazonka would work directly with the default nixpkgs/haskell-updates default package set on the latest ghc.

[Montmorency]

Looks like #1015 works. Thanks!

[endgame]

What is the process for uploading a new Version 2.1 to Hackage?

Completing the 2.1 Milestone, publishing an RC for people to point at from git, then working through the release checklist and asking Brendan to send it all to Hackage when that's done.

had to also override micro-lens pro as its marked broken in nixpkgs

If all it needed was an unmarkBroken and it built on haskellPackages.ghc (as in, the default without asking for a specific version) then I'd recommend PRing nixpkgs' haskell-updates branch with something like NixOS/nixpkgs#283858 so they can re-add it to the standard package set.