How to find which ports depends on a given one when using macports?

Question

I want to find which ports depends on a given installed port (texlive in my case). I found port deps texlive, but this is working in the "wrong" direction. How can I do it?

Answer 1

Use port dependents <portname>. From man port:

dependents
Lists the installed ports that depend on the port portname.

There is no way to search for all ports (including those not installed) depending on a certain port.

Answer 2

port echo dependentof:texlive

I believe that this will only show you a list of port installed on your machine that depend on the port.