Jerome Kelleher

> We need to think about the API, e.g. if we require a mutation rate (or if it is absent, whether we simply return an undated tree sequence). That would...

Nice bug report, thanks! What's the output of ``print(demog.debug())``?

Hmm, so it looks like those mass migrations at time 0 aren't happening at all in msprime, they're not picked up by the Debugger. I'm not surprised that the ``coalescence_rate_trajectory``...

Nice example Nate! It does feel like allowing stuff to happen at time=0 is more trouble than it's worth. I vote we just error out at the python level if...

I think the better approach here is to comment out msp_verify where ever it's being called in this file. This will kill performance on any of the models.

This was how it's designed - it should never be called in production code, it's meant to be used during development and called explicitly from the C test suite. So,...

Oh, I see - were you running all the evaluations through the dev CLI? Let's not do this, the dev-cli isn't for profiling it's strictly for development (and almost never...

I'm going to close this as the dev cli isn't something we want to use for anything serious

Looks like you have a few lint issues that need to be fixed also.

Thanks @currocam! It's probably worth installing pre-commit, following the dev docs [here](https://tskit.dev/tskit/docs/stable/development.html#pre-commit-checks). (pre-commit install, should do it). It would be good to rebase and squash the commits also, as this...