D3845: worker: support more return types in posix worker

[hooper (Danny Hooper)]

hooper added a comment.


  Yuya, it had passed tests for me with cbor, so is that a portability issue?
  
  One of the benefits of pickle/marshal is that we don't lose information, like when tuples become lists. That would be an insidious problem for callers.
  
  Also, in case it wasn't obvious, we'll need another patch to add some handling of len(dumps(result)) > PIPE_BUF (which was an existing issue).

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D3845

To: hooper, #hg-reviewers
Cc: yuja, durin42, mercurial-devel