26 lines
637 B
Markdown
26 lines
637 B
Markdown
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# 27-haskell-aeson-roundtrip
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This example shows intermediate Haskell JSON work with explicit Aeson round trips.
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It includes:
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- custom `ToJSON` and `FromJSON` instances for domain types,
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- a nested rollout strategy encoded with a stable JSON shape,
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- a CLI that prints JSON and decodes it back into a summary, and
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- a test suite run by `nix flake check`.
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Useful commands:
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```bash
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nix develop
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cabal run
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cabal run -- api production 3 platform,security canary:10
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cabal test
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nix build
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./result/bin/mini-manifest api production 3 platform,security canary:10
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nix run . -- api production 3 platform,security canary:10
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nix flake check
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```
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