27 lines
787 B
Markdown
27 lines
787 B
Markdown
# 33-haskell-optparse-cli
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This example shows intermediate Haskell CLI parsing with `optparse-applicative`.
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It includes:
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- subcommands for validation and promotion,
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- named options, repeated options, and typed numeric parsing,
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- a pure parser entry point that the test suite exercises, 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 -- validate --service api --env production --replicas 3 --track stable
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cabal run -- promote --service api --from-tag blue --to-tag green --owner platform --owner security --dry-run
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cabal test
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nix build
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./result/bin/mini-cli validate --service api --env production --replicas 3 --track stable
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nix run . -- validate --service api --env production --replicas 3 --track stable
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nix flake check
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```
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