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Reformatting with parentheses around list of derived instances results in "AST mismatch" #37

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mrkkrp opened this issue May 8, 2019 · 1 comment
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Reformatting with parentheses around list of derived instances results in "AST mismatch" #37

mrkkrp opened this issue May 8, 2019 · 1 comment
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mrkkrp commented May 8, 2019 •
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Obviously it's because AST in GHC is a total mess. Anyway, we need to fix this:

data Foo = Foo deriving Bar

Currently this example results in an error. If Bar is inside of parentheses in original input, it all works. The solution would be perhaps to preserve absence of parentheses in that case.

Low priority for now.
@mrkkrp mrkkrp added the bug Something isn't working label May 8, 2019
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mrkkrp commented Jun 2, 2019

This has been resolved as a side effect of switching to GHC 8.6.4 in #58. Closing.

@mrkkrp mrkkrp closed this as completed Jun 2, 2019
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