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tcfail046.hs:10:50:
No instance for (Eq (Process a))
arising from the 'deriving' clause of a data type declaration
Possible fix:
add an instance declaration for (Eq (Process a))
or use a standalone 'deriving instance' declaration,
so you can specify the instance context yourself
When deriving the instance for (Eq (Continuation a))
tcfail046.hs:22:25:
No instance for (Eq (Process a))
arising from the 'deriving' clause of a data type declaration
Possible fix:
add an instance declaration for (Eq (Process a))
or use a standalone 'deriving instance' declaration,
so you can specify the instance context yourself
When deriving the instance for (Eq (Message a))
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