I don't know what actually doing. I worked with slitaz-base-files using mercurial. When I install this project to my regular SliTaz installation, I loose my tux user.
tux@slitaz:/home/hg/slitaz-base-files$ su
Password:
root@slitaz:/home/hg/slitaz-base-files# make install
Compiling fr mo file...
Compiling ru mo file...
install -m 0755 -d /usr/share/locale
cp -a po/mo/* /usr/share/locale
cp -a rootfs/* /
install -m 0755 -d /usr/share/doc/slitaz
cp -a doc/* /usr/share/doc/slitaz
chown -R root.root /usr/share/doc/slitaz
root@slitaz:/home/hg/slitaz-base-files# exit
@slitaz:/home/hg/slitaz-base-files$ whoami
whoami: unknown uid 1000
@slitaz:/home/hg/slitaz-base-files$ cd
@slitaz:/home/tux$
If I log out from system, then I can't log in as tux, only as root.
Thanks I have not "full" install, and all worked as usually after rebooting from my USB-SliTaz.