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Ömer Sinan Ağacan authored
Add a flag to print type-synonyms-expanded versions of types in type error messages (in addition to old error messages with synonyms) * Mailing list discussion: https://mail.haskell.org/pipermail/ghc-devs/2015-June/009247.html * Wiki page: https://wiki.haskell.org/Expanding_type_synonyms_in_error_messages_proposal * Trac: https://ghc.haskell.org/trac/ghc/ticket/10547 Test Plan: * I'll find some examples and add tests. Reviewers: austin, simonpj, goldfire, bgamari Reviewed By: austin, simonpj, goldfire, bgamari Subscribers: rodlogic, thomie, bgamari Differential Revision: https://phabricator.haskell.org/D1016 GHC Trac Issues: #10547
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