#1769: Deriving Typeable for data families
----------------------------------------+-----------------------------------
Reporter: chak | Owner: chak
Type: task | Status: new
Priority: low | Milestone: 7.0.1
Component: Compiler (Type checker) | Version: 6.9
Keywords: | Testcase:
Blockedby: | Difficulty: Unknown
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
----------------------------------------+-----------------------------------
Changes (by mitar):
* cc: mmi...@… (added)
* failure: => None/Unknown
Comment:
Ping.
This would be really great to have. Currently (7.0 from repository) it
fails with:
{{{
Can't make a derived instance of
`Typeable (...)':
`...' is a type family
}}}
But without Typeable I cannot make instance of Data for `data` types I
have associated with my type class.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1769#comment:6>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
_______________________________________________
Glasgow-haskell-bugs mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
