/etc/env.d/ and PATH ranking

[camaldoli]

If I put something like

PATH="/home/user/bin"

in let's say

/etc/env.d/00whatever

the resulting PATH is

/usr/local/bin:/usr/bin:/bin:/opt/bin:/home/user/bin

But I want /home/user/bin to override system bindirs,
so what I want is

/home/user/bin:/usr/local/bin:/usr/bin:/bin:/opt/bin

Under GNOME it's not sufficient to add

PATH="/home/user/bin:$PATH"

to .bashrc, because I don't want to have
to start applications from gnome-terminal.

How can I add /home/user/bin system wide
in front of PATH?

[cwr]