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	Mon, 19 Oct 2015 00:48:16 -0700 (PDT)
Date:	Mon, 19 Oct 2015 09:48:11 +0200
From:	"Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] Pin mapping (separate symbols from mappings)
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> >  Where and how
> > do we decide between "this feature is part of geda-gaf" and "this
> > feature doesn't belong because it's too downstream-specific" even if
> > geda-gaf is the ideal place to implement that feature?
> 
> The challenge for a toolkit is to enable users to create the features they need, not to force them to use what we in our folly imagine they might need.


> > I'm not trying to be annoying here, I'm just thinking that heavy
> > symbols by definition are downstream-specific,
> 
> Actually, one of the goals of gnet-spice-noqsi is to have symbols/instances that work for a variety of layout tools and for simulations. I think it’s pretty much there. I have schematics that work with three different layout programs, and with ngspice. Hurray for gEDA!


> > we can't help but have
> > downstream-specific helpers (pin mapping, model choosing, whatever)
> > for the netlisters to use.
> 
> Pin mapping is independent of the layout tool. Model choosing depends somewhat on the simulation tool, but is currently handled by user-written back ends without any specific support in the geda-gaf core.


I would consider mapping selected from value, slot and footprint combination a good feature which would work with a variety of layout tools and may be selected indenpendently of layout tool by netlister.


Nicklas Karlsson

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