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 |