#5616: TH type quotes cannot contain free type variables
---------------------------------+------------------------------------------
Reporter: Lennart | Owner:
Type: bug | Status: new
Priority: normal | Component: Template Haskell
Version: 7.2.1 | Keywords:
Testcase: | Blockedby:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
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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.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5616>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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