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Format Haskell package descriptions and cabal project files with cabal-gild: *.cabal, cabal.project, cabal.project.local, and cabal.project.freeze. Use after editing dependencies or stanzas, when refreshing cabal-gild discover module lists, or when checking cabal file formatting.

Format Haskell source files: *.hs, *.lhs, and *.hsig, with the project's configured formatter: fourmolu, ormolu, or stylish-haskell. Use before compiling, after source edits, and when applying project style.

Super-skill for developing Haskell projects with cabal nix-style builds. Orchestrates HLS diagnostics, Haddock, Hoogle, source formatting, and cabal-gild into one workflow. Use when writing, editing, refactoring, building, typechecking, fixing compiler errors, renaming symbols, looking up APIs, or changing dependencies in Haskell projects. Treat cabal.project as the source of truth, prefer HLS before full builds, and prefer local docs over remote lookup.

Read Haskell package documentation, Haddock HTML, Hackage pages, or dependency source for cabal nix-style projects. Prefer locally built/cached docs and source from the cabal store, dist-newstyle, plan.json, and repo-cache; fall back to Hackage only for packages outside the project dependency set or when local docs are unavailable.

Search Haskell APIs using Hoogle. Use when working with Haskell projects to look up function signatures, find functions by type, discover library documentation, or identify which module exports an item.

Read Haskell package documentation (Haddock HTML) and source code for the dependencies of a cabal nix-style project, preferring locally-built/cached files over the network. Use when: (1) looking up the API or docs of a dependency, (2) reading the source of a dependency, (3) understanding how a library function is implemented, (4) inspecting the types/instances a package exposes. Prefers the local cabal store and repo-cache; falls back to Hackage only for packages outside the project's dependency set. Trigger: "/haddock <package> [module]".

Format Haskell package descriptions and project files with cabal-gild — `*.cabal`, `cabal.project`, `cabal.project.local`, `cabal.project.freeze`. Normalises layout, sorts `build-depends`, and expands `-- cabal-gild: discover` module lists. Use when: (1) formatting or tidying a `.cabal` or `cabal.project` file, (2) after editing dependencies or stanzas, (3) refreshing auto-discovered module lists after adding/removing a module, (4) checking whether cabal files are already formatted. Trigger: "/haskell-cabal-gild", "cabal-gild", "format cabal".

Format Haskell source files — `*.hs`, `*.lhs`, `*.hsig` — with the project's configured formatter (fourmolu, ormolu, or stylish-haskell). Use when: (1) formatting Haskell source before compiling, (2) tidying code after edits, (3) applying a project's fourmolu/stylish style. Picks the formatter from project config, falling back to the first available. Trigger: "/haskell-format", "format Haskell", "fourmolu", "ormolu", "stylish-haskell".

Super-skill for developing Haskell projects with cabal nix-style builds. Orchestrates the Haskell Language Server, Haddock, and Hoogle tools into one workflow instead of duplicating them. Use when: (1) writing/editing/refactoring Haskell (.hs/.lhs/.hsig/.cabal/package.yaml) code, (2) building or typechecking a cabal project, (3) fixing compiler or type errors, (4) renaming or looking up symbols, (5) adding or changing dependencies. Treats cabal.project as the source of truth, prefers the LSP before full builds, and local docs over remote. Trigger: "/haskell" or any Haskell development task.