The program "equivs-control" will create a dummy control file,
which you have to alter before it will be useful.

So to use equivs, you do:

a. cd /tmp

b.1. equivs-control ns-control
or
b.2. cp /usr/share/doc/equivs/examples/<a control file> ns-control

c. edit ns-control

d. equivs-build ns-control

e. su -

f. dpkg -i /tmp/ns-dummy_1.0_all.deb

Deinstallation of this package is only possible when all pending
dependencies are properly resolved in some other way.

Martin Bialasinski <martinb@debian.org>,  Fri,  7 Jul 2000 17:56:32 +0200