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name: haskell-agent description: Haskell release protocol, development conventions, and deep patterns for the ~/haskell/ ecosystem

haskell-agent

The canonical Haskell protocol — release checklist, house style, dependency management, and structural patterns from ~37 packages in ~/haskell/.

Load this skill when working on any Haskell package under ~/haskell/ — especially during release prep, new project setup, or when conventions questions arise.

Source

• Local: ~/other/haskell-agent/protocol.md
• GitHub: https://github.com/tonyday567/haskell-agent
• Symlink: ~/mg/buff/haskell-protocol.md → the above

When to load

• Starting a new Haskell project
• Preparing a release (the full 8-phase checklist)
• Resolving dependency issues (allow-newer, bound rot)
• Checking conventions (import style, export lists, module structure)
• Benchmarking compiled Haskell (perf pattern)
• Working with dual representations (Circuit/Hyper, run vs reify)
• Setting up CI for a Haskell package

Protocol sections

1. Quick Start — ghcup, cabal init, tooling install
2. Conventions — imports, exports, module structure, doctests
3. House Style — emergent patterns from ~37 packages (bool over if, import aliases, Category-based architecture, etc.)
4. Build Performance — cabal build as #1 wait-point
5. Core Library Recipes — per-library cards as tested recipes
6. Release Protocol — 8 gated phases: Environment → Init → Dependencies → Code Quality → Docs/Testing → Release Prep → Verification → Publishing
7. Markdown Cards — design docs with repl-verifiable code blocks
8. Deep Patterns — dual representations, tensor awareness, Either convention, perf pattern
9. Dev Toolkit — typed holes, HLS typecheck, module type check
10. Default Files — .hlint.yaml, .ghci, .gitignore, CI template

Key references within protocol

• allow-newer — canonical minimal block is tdigest:base; ghost pins table; internal bound rot; rationalization workflow
• harpie replaces numhask-array — bump bounds accordingly
• Either convention — Left = feedback (continue), Right = exit; fixed by Trace class
• Perf pattern — compile don't interpret, tight loops, percentiles not averages, NOINLINE on entry points
• Dual representations — run for Hyper, reify for Circuit; not interchangeable

Companion files

• ~/self/buff/haskell-survey.md — haskell-survey: full idiom mining, hardening log, ~37 library surveys
• ~/self/buff/haskell-allow-newer.md — upstream blocker tracking, repo-by-repo status
• ~/haskell/circuits/SKILL.md — circuits-specific agent field guide
• ~/haskell/circuits-meter/SKILL.md — perf benchmarking conventions