[pytest-dev] a potential alternative to the py.code merge

[Ronny Pfannschmidt]

Hi everyone,

this is probably a bit late, in particular since Bruno did already spend
a considerable amount of time,

but instead of merging py.code for the exception repressentation,
i would like to propose introducing a abstraction layer,
and allowing to set the exception representation in pytest.ini or via
plugins

this would allow more free experimentation, and also a really clean
transition from
py.code as default * new possible, to py.code the legacy and new code
the default.

-- Ronny