TH type quotes cannot contain free type variables
A type quote cannot contain a free type variable, e.g.
module TH where
import Language.Haskell.TH
foo = [t| a |]This is very awkward when passing arguments that are going into instance declarations since these need to have free type variables.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.2.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Template Haskell |
| Test case | |
| Differential revisions | |
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| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |