Promotable type synonyms (or: synonyms to promoted types)
I want to use synonyms to promoted types in the same places where I can use the promoted types:
{-# LANGUAGE DataKinds, KindSignatures #-}
module PromotableTypeSynonyms where
data B = T | F
data P :: B -> *
type B' = B
data P' :: B' -> * -- using B' synonym here is currently not allowed
Trac metadata
Trac field | Value |
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Version | |
Type | FeatureRequest |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler (Type checker) |
Test case | |
Differential revisions | |
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Blocking | |
CC | |
Operating system | |
Architecture |