Reports choice type parameters that aren't used in the definition (often called "phantom types").

import NoUnused.CustomTypeConstructorArgs
import NoUnused.CustomTypeConstructors
import Review.PhantomType


config =
    [ Review.PhantomType.forbid


    -- to catch unused type variables
    , NoUnused.CustomTypeConstructors.rule []
    , NoUnused.CustomTypeConstructorArgs.rule
    ]

• 🧩 NoUnused.CustomTypeConstructorArgs
• 🧩 NoUnused.CustomTypeConstructors