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Subject: Re: [geda-user] Re: (Nety selection gschem <--> pcb)
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From: "Dan McMahill (dan AT mcmahill DOT net) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Date: Sun, 10 Jan 2016 14:01:54 -0500
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On 1/8/2016 1:02 PM, John Doty wrote:
>
> On Jan 8, 2016, at 11:59 AM, Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
>
>>>> Sounds good Dan .. is this in public release or some branch/fork somewhere?
>>>>
>>>
>>> It has been in the main sources for a long time.  I can't recall if
>>> pcb.scm was configured into what goes into release tar files or not
>>> since it is a work in progress.  It most certainly is not loaded by default.
>>>
>>> -Dan
>>
>> Could this net selection cause any problems if it does not work?
>
> Yes.

probably

>
>> Or do you know why it is not in the distribution?
>
> It is in the distribution, just not loaded by default.
>

It is not loaded because it is not finished.  The device selection 
seemed to be working but it has been so many years I don't recall what 
issues remained.  Back then net selection certainly didn't work because 
gschem didn't understand enough (or perhaps it was me not understanding 
what gschem knew about) about connectivity.  By that I mean that 
gnetlist handled all the connectivity stuff.  Before I got busy with 
other more urgent issues outside of geda, I'd been making some slow 
steady progress but was having to create some of the scheme API as I 
went to make sure the required support functions existed.

One of the issues on the pcb side of things is while on the one hand we 
have actions and pcb can listen to a pipe, actions are basically one way 
things.  You tell pcb "go do X" and it doesn't come back and say "I 
tried and it worked" or "failed" or "failed because of Y".  I was using 
a bidirectional pipe.  You could argue that dbus or something else is 
better.  I was more concerned with making sure that gschem had all the 
scheme functions one would need to be able to implement full featured 
plug ins.

But the short answer is it wasn't enabled because it wasn't complete and 
certainly hadn't been tested enough.

-Dan