Graham Markall

Some other background reading: #6251, #6772, #6972. I'm wondering if this is related to a change in inlining decisions being made with code edits, that result in the function being...

Thanks for this! I may not be able to get the venv to work on my machine, but it looks like this only depends on `xyzcad`, I think?

I get the impression this is a bad interaction with GC and caching - perhaps we're only holding a `weakref` to something we should hold a proper reference to?

Also I am suspicious that it's to do with first-class functions, as we have (from `xyzcad`): ```python @jit(nopython=True, cache=True) def findSurfacePnt(func, minVal=-1000., maxVal=+1000., resSteps=24): #t0 = time.time() ps = getInitPnt(func,...

@guilhermeleobas Do you have any thoughts on what it would take to make this work?

/azp run

@jaredjeya Many thanks for the PR! I'm tentatively moving it to the 0.60 milestone - at the moment we're working on the 0.59 release, and the 0.60 release will be...

> Em, I met this issue on my customised 0.57.1. Perhaps another PR has already fixed this somehow? I just realised what the problem with the test is - see...

It's because this was merge, which removed `compile_isolated`: https://github.com/numba/numba/pull/9330

May be related to https://github.com/numba/numba/issues/9001 - it is on my to-do list to fix that, and may resolve this issue.