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  • Matthew Pickering's avatar
    Add a flag to emit error messages as JSON · 91691117
    Matthew Pickering authored and Ben Gamari's avatar Ben Gamari committed
    This patch adds the flag `-ddump-json` which dumps all the compiler
    output as a JSON array. This allows tooling to more easily parse GHC's
    output to display to users.
    
    The flag is currently experimental and will hopefully be refined for the
    next release.  In particular I have avoided any changes which involve
    significant refactoring and provided what is easy given the current
    infrastructure.
    
    Reviewers: austin, bgamari
    
    Reviewed By: bgamari
    
    Subscribers: DanielG, gracjan, thomie
    
    Differential Revision: https://phabricator.haskell.org/D3010
    
    GHC Trac Issues: #13190
    91691117