there is a bug with meson-python and python 3.13.

That bug is described in mesonbuild/meson#12401. It will be resolved somehow before Python 3.13 is released so it is not a significant problem.

Okay, this is working on Windows now.

It is still not working with Flint < 3.1.0 for some reason...

Since GitHub did not create the automatic back-reference this is where the rest of the discussion happened about these changes: mesonbuild/meson-python#602

I've opened another discussion in meson-python about editable installs on OSX: mesonbuild/meson-python#604

The main outstanding problem here is just that building with Flint < 3.1.0 fails when using pkgconfig. I think that this is due to a bug that was fixed by flintlib/flint#1647.

I think that this is due to a bug that was fixed by flintlib/flint#1647.

I can confirm that fixing the Flint 3.0.1 flint.pc pkgconfig file fixes this problem. The question then is just whether python-flint should drop support for Flint < 3.0.1 or if it would be better to add something to the meson build config that can fix this.