Add Semigroup warnings
Similar to #8004 (closed), do the following for Semigroup/Monoid:
- Warn when an instance of a class has been given, but the type does not
have a certain superclass instance
- Warn when top-level definitions conflict with future Prelude names
Trac metadata
Trac field | Value |
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Version | |
Type | Task |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | hvr |
Operating system | |
Architecture |