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Ryan Scott authored
GHC was panicking when pretty-printing a heterogeneous equality type constructor (#14390) because the function which produced the type constructor, `toIfaceTyCon`, wasn't attaching the appropriate `IfaceTyConSort` for equality type constructors, which is `IfaceEqualityTyCon`. This is fixed easily enough. Test Plan: make test TEST=T14390 Reviewers: austin, bgamari Reviewed By: bgamari Subscribers: rwbarton, thomie GHC Trac Issues: #14390 Differential Revision: https://phabricator.haskell.org/D4132
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