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niteria authored
The order inert_model and intert_eqs fold affects the order that the typechecker looks at things. I've been able to experimentally confirm that the order of equalities and the order of the model matter for determinism. This is just a straigthforward replacement of nondeterministic VarEnv for deterministic DVarEnv. Test Plan: ./validate Reviewers: simonpj, goldfire, austin, bgamari, simonmar Reviewed By: simonmar Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2232 GHC Trac Issues: #4012 (cherry picked from commit fffe3a25)
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