Vim pytest compiler (with traceback support)

Purpose

This compiler file matches all lines of a traceback, so that you can easily jump up and down the call stack with the usual vim commands. This is most useful when looking only at a single test failure (e.g. when pytest is called with -x).

Configuration

If you use it together with test.vim, you want to configure mypy to use short tracebacks:

let test#python#pytest#options = '-Wignore --tb=short -q'