repository: port peer interfaces to zope.interface zope.interface is superior. Let's switch to it. Unlike abc, which defines interfaces through a base class, zope.interface uses different types for interfaces and for implementations. So, we had to invent some new types to hold the interfaces in order to separate the interface from its default implementation. The names here could probably be better. I've been wanting to overhaul the peer interface for a while. And wire protocol version 2 will force that work. So anticipate a refactoring of these interfaces in later commits. With this commit, we no longer test abc interfaces in test-check-interfaces.py, so code for that has been removed. Differential Revision: https://phab.mercurial-scm.org/D3068 # no-check-commit because of stream_out()

wireproto: convert human output frames to CBOR This is easier than rolling our own encoding format. As a bonus, some of our artificial limits around lengths of things went away because we are no longer using fixed length fields to hold sizes. Differential Revision: https://phab.mercurial-scm.org/D3067

py3: use pycompat.bytestr() intsead of str Differential Revision: https://phab.mercurial-scm.org/D3071

py3: use print as a function in tests/test-walk.t Differential Revision: https://phab.mercurial-scm.org/D3070