# Control which extensions/flags/modules/functions can be used
#
- extensions:
  - default: false # all extension are banned by default
  - name:
    - CPP
    - DataKinds
    - DeriveDataTypeable
    - DeriveFoldable
    - DeriveFunctor
    - DeriveGeneric
    - DeriveTraversable
    - FlexibleContexts
    - FlexibleInstances
    - FunctionalDependencies
    - GADTs
    - KindSignatures
    - MultiParamTypeClasses
    - OverloadedStrings
    - PolyKinds
    - RankNTypes
    - ScopedTypeVariables
    - TypeFamilies
    - TypeOperators
    - UndecidableInstances

- modules:
  - {name: [Data.Set], as: Set}
  - {name: Control.Arrow, within: []} # Certain modules are banned entirely

- functions:
  - {name: unsafePerformIO, within: []} # unsafePerformIO can only appear in no modules

# Turn on hints that are off by default
#
# Ban "module X(module X) where", to require a real export list
- warn: {name: Use explicit module export list}

# Ignore some builtin hints
- ignore: {name: Redundant do}
- ignore: {name: Parse error}
- ignore: {name: Use fmap}
- ignore: {name: "Use <$>"}
- ignore: {name: Use list comprehension}
- ignore: {name: Use lambda-case}
- ignore: {name: Eta reduce}

# Add custom hints for this project
#
# Will suggest replacing "wibbleMany [myvar]" with "wibbleOne myvar"
# - error: {lhs: "wibbleMany [x]", rhs: wibbleOne x}