blob: 5ddd81dd1eda7f2ba7efae6ec924e7421a607848 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
|
T10598_fail2.hs:4:37: error:
• Can't make a derived instance of
‘Eq A’ with the anyclass strategy:
Try enabling DeriveAnyClass
• In the data declaration for ‘A’
T10598_fail2.hs:5:37: error:
• Can't make a derived instance of
‘Eq B’ with the newtype strategy:
Try GeneralizedNewtypeDeriving for GHC's newtype-deriving extension
• In the newtype declaration for ‘B’
|