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Merge pull request #4579 from roc-lang/underivable-rigid-better-error

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Suggest binding type variables to an ability when they're unsatisfied
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Richard Feldman 2022-11-25 19:46:11 -05:00 • committed by GitHub
commit 791025d3ed
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2 changed files with 35 additions and 2 deletions
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4
crates/compiler/solve/src/ability.rs
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@ -502,7 +502,7 @@ trait DerivableVisitor {
if abilities != [Self::ABILITY] {
Err(NotDerivable {
var,
context: NotDerivableContext::NoContext,
context: NotDerivableContext::UnboundVar,
})
} else {
Ok(())
@ -634,7 +634,7 @@ trait DerivableVisitor {
RigidVar(_) => {
return Err(NotDerivable {
var,
context: NotDerivableContext::NoContext,
context: NotDerivableContext::UnboundVar,
})
}
FlexAbleVar(opt_name, abilities) => {