• mniip's avatar
    Add a -fprint-axiom-incomps option (#15546) · 2073745c
    mniip authored
    Supply branch incomps when building an IfaceClosedSynFamilyTyCon
    
    `pprTyThing` now has access to incomps. This also causes them to be
    written out to .hi files, but that doesn't pose an issue other than a
    more faithful bijection between `tyThingToIfaceDecl` and `tcIfaceDecl`.
    
    The machinery for displaying axiom incomps was already present but not
    in use. Since this is now a thing that pops up in ghci's :info the
    format was modified to look like a haskell comment.
    
    Documentation and a test for the new feature included.
    
    Test Plan: T15546
    
    Reviewers: simonpj, bgamari, goldfire
    
    Reviewed By: simonpj
    
    Subscribers: rwbarton, carter
    
    GHC Trac Issues: #15546
    
    Differential Revision: https://phabricator.haskell.org/D5097
    2073745c
Code owners : Ben Gamari
glasgow_exts.rst 601 KB