build

Simplify CI #948

Job	Run time
Nix Flake (ubuntu-latest)	4m 0s
Generate matrix from cabal	4s
Nix Flake (macos-latest)	3m 29s
Run fourmolu	5s
Check and format all cabal files	5s
Run hlint	9s
Haskell GHC 9.2 cabal	3m 44s
Haskell GHC 9.4 cabal	4m 15s
Haskell GHC 9.6 cabal	4m 36s
Haskell GHC 9.8 cabal	5m 4s
Haskell GHC 9.10 cabal	2m 54s
Nix Flake Develop (9.2, ubuntu-latest)	5m 46s
Nix Flake Develop (9.4, ubuntu-latest)	4m 32s
Nix Flake Develop (9.6, ubuntu-latest)	3m 56s
Nix Flake Develop (9.8, ubuntu-latest)	3m 40s
Nix Flake Develop (9.10, ubuntu-latest)	2m 52s
Successfully build and test on all systems	1s
	49m 12s

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