1. 17 Feb, 2017 1 commit
    • Edward Z. Yang's avatar
      Improvements/bugfixes to signature reexport handling. · fd2d5b6d
      Edward Z. Yang authored
      
      
      Summary:
      A number of changes:
      
      - Keep the TcGblEnv from typechecking the local signature
        around when we do merging.  In particular, we setup
        tcg_imports and tcg_rdr_env according to the local
        signature.  This improves our error output (for example,
        see bkpfail04) and also fixes a bug with reexporting
        modules in signatures (see bkpreex07)
      
      - Fix a bug in thinning, where if we had signature A(module A),
        this previously would have *thinned out* all of the inherited
        signatures.  Now we treat every inherited signature as having
        come from an import like "import A", so a module A reexport
        will pick them up.
      
      - Recompilation checking now keeps track of dependent source files
        of the source signature; previously we forgot to retain this
        info.
      
      There's a manual update too.
      Signed-off-by: default avatarEdward Z. Yang <ezyang@cs.stanford.edu>
      
      Test Plan: validate
      
      Reviewers: bgamari, austin
      
      Subscribers: thomie
      
      Differential Revision: https://phabricator.haskell.org/D3133
      fd2d5b6d