Ubuntu 25.10: base-passwd fails to chown. (pseudo issue)

[Gijs Peskens <gijs.peskens@munisense.com>]

I'm just posting this here as a reference so others who run into this 
can hopefully find it, as it took me a while to figure out what was 
happening ;)

Ubuntu 25.10 obviously isn't supported, so I'm aware I'm on my own....

On Ubuntu 25.10 packages will fail to chown, this is due to Ubuntu 
having moved away from gnu coreutils to the rust based uutils coreutils. 
I'm presuming that Pseudo works by overriding libC provided functions, 
and thus intercepting the syscalls, and that the rust based coreutils do 
their syscalls directly (without a libC), which breaks pseudo and will 
result in failure to chown errors (and possibly other errors as well).

As a work-around, on 25.10, it's still possible to switch back to 
gnu-coreutils:
sudo apt-get remove --allow-remove-essential coreutils-from-uutils

(at your own risk)

Hope it helps others who run into this! :)

(and perhaps some thought must be given to this before 26.04 comes out, 
if the intention is to support that LTS).

Gijs Peskens