nix-playgraound/31-haskell-writer-audit/README.md

31-haskell-writer-audit

This example shows intermediate Haskell rollout simulation with Writer.

It includes:

• a release job with rollout modes and replica counts,
• a Writer [String] audit trail that records ordered rollout events,
• a final rollout report computed alongside the log, and
• a test suite run by nix flake check.

Useful commands:

nix develop
cabal run
cabal run -- api:production:canary:20:3 worker:staging:rolling:0:2
cabal test

nix build
./result/bin/mini-audit api:production:canary:20:3 worker:staging:rolling:0:2

nix run . -- api:production:canary:20:3 worker:staging:rolling:0:2
nix flake check