TH cannot splice patterns in declaration quotes
Try this:
{-# LANGUAGE TemplateHaskell #-}
module TH2 where
import Language.Haskell.TH
foo :: PatQ -> DecsQ
foo p = [d| $(p) = 1 |]
Or this
{-# LANGUAGE TemplateHaskell #-}
module TH3 where
import Language.Haskell.TH
foo :: PatQ -> DecsQ
foo p = [d| f $(p) = 1 |]
Trac metadata
Trac field | Value |
---|---|
Version | 7.2.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Template Haskell |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |