Data family constructors defined in GHCi are not in scope
The following example explains the problem:
> data family Foo a
> data instance Foo Int = FooInt
> :t FooInt
<interactive>:1:1: Not in scope: data constructor `FooInt'
FooInt
is defined, but GHCi
doesn't recognize it.
Trac metadata
Trac field | Value |
---|---|
Version | 7.4.2 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | GHCi |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |