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Improve expectation for platform requires mismatch

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```
── TYPE MISMATCH ───── examples/hello-world/rust-platform/./Package-Config.roc ─

Something is off with the type annotation of the main required symbol:

2│      requires {} { main : a -> a }
                             ^^^^^^

This #UserApp.main value is a:

    Str

But the type annotation on main says it should be:

    a -> a

────────────────────────────────────────────────────────────────────────────────
```
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ayazhafiz 2022-05-05 21:14:54 -04:00 • committed by Richard Feldman
parent 514af619f5
commit ef77ff35cf
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3 changed files with 11 additions and 1 deletions
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4
compiler/types/src/types.rs
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@ -1708,6 +1708,9 @@ pub enum AnnotationSource {
TypedBody {
region: Region,
},
RequiredSymbol {
region: Region,
},
}
impl AnnotationSource {
@ -1716,6 +1719,7 @@ impl AnnotationSource {
&Self::TypedIfBranch { region, .. }
| &Self::TypedWhenBranch { region, .. }
| &Self::TypedBody { region, .. } => region,
&Self::RequiredSymbol { region, .. } => region,
}
}
}