blob: 94927cd790a6ce323141f54a97def116ed4f2f2c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
drvfail013.hs:4:70:
No instance for (Eq (m (Maybe a)))
arising from the 'deriving' clause of a data type declaration
Possible fix:
add an instance declaration for (Eq (m (Maybe a)))
or use a standalone 'deriving instance' declaration,
so you can specify the instance context yourself
When deriving the instance for (Eq (MaybeT m a))
drvfail013.hs:6:70:
No instance for (Eq (m (Maybe a)))
arising from the 'deriving' clause of a data type declaration
Possible fix:
add an instance declaration for (Eq (m (Maybe a)))
or use a standalone 'deriving instance' declaration,
so you can specify the instance context yourself
When deriving the instance for (Eq (MaybeT' m a))
|
