Hello. Does some know how can I modify the pins generated when reading spice in magic (change size and metal attached to it)? I've created a netlist from xschem and read it in magic. But it seems that always the pins are attached to metal1 and have a fixed size.

You can edit the subcell and edit the labels. I know that changing the size of the label attachment box is annoyingly difficult in magic; I just added a new command option

setlabel box

to make that easier (I may add a convenience function to the text GUI to make it even easier). Changing the layer can be done with

setlabel layer

(which can be done from the text GUI window).

Thank you!

As of about 6 hours ago, yes, if you pull the most recent magic version from github.