Template haskell instance declaration quotations with members don't work in ghci
Inside GHCi, the following quotation fails:
Prelude Language.Haskell.TH> runQ [d| instance Monad ((,) a) where return = (,) undefined; (a,x) >>= f = f x |]
<interactive>:1:38:
`return' is not a (visible) method of class `Monad'
<interactive>:1:68:
`>>=' is not a (visible) method of class `Monad'The same error seems to occur for any typeclass I try. This code works fine inside a module passed to GHC.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 6.12.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | GHCi |
| Test case | |
| Differential revisions | |
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| Blocking | |
| CC | |
| Operating system | |
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