[totony]

>but if you check the code for udevd at this moment you can see a lot of use of utility headers that are not really appropriate for a libudev:

That's fair.

>This is not code that could be deleted from systemd if it was separated.

Why not? You could make a library out of those utility functions and use it from both systemd and udev (without having to include most of libsystemd which doesn't seem useful for udev).

[zxzax]

I don't have a quote handy, but systemd maintainers have previously said they are not interested in also maintaining a giant public API of utility functions, on top of everything else.