xordg-libXi -> gtk2, texlive xcommon etc... why ?

[Erwan David]

upgrading my ports I fnd that the upgrade of xorg-libXi wants to install
whole gtk, a part of texlive, etc..

Hpow can I stop this madness ?, How can I go back removing all the
dependencies it installed ?

How can I see the whole dependency tree to see why I get this ?

ANd how can I say : never install xorg libraries, neverinstall gtk, etc ?