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Edward Z. Yang authored
Summary: Previously, we only checked to recompile if a signature we previously depended on changed; however, if the -unit-id settings changed, this could have resulted in more or less signatures needing to be merged in; we weren't checking for this case. (Note that this logic is irrelevant for normal module imports, which we also check using -unit-id, as we record each import and redo it, forcing a recompile if the result changed.) Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu> Test Plan: validate Reviewers: simonpj, austin, bgamari Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2832
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