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Date: Thu, 9 Jul 2015 09:00:31 -0800
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Subject: Re: [geda-user] Back annotation
From: "Britton Kerin (britton DOT kerin AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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On Thu, Jul 9, 2015 at 7:26 AM, Evan Foss (evanfoss AT gmail DOT com) [via
geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
> On Thu, Jul 9, 2015 at 10:47 AM, Dave McGuire (mcguire AT neurotica DOT com)
> [via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
>> On 07/09/2015 10:25 AM, John Doty wrote:
>>>>> If you’re just making changes until a diff shows nothing, it doesn’t matter whether you make them upstream or downstream. Just quit when you have a match!
>>>>
>>>> This sounds reasonable to me.  So the common denominator is to load a "target netlist" into gschem and show the differences between the current state and the target state, either by highlighting them in the schematic or by showing a diff?  This shouldn't be too difficult to implement.
>>>
>>> Not into gschem. Keep gschem clean, please. I just displayed a diff in a terminal window.
>>
>>   Why are you assuming that adding this (or anything else!) will
>> automatically make gschem "dirty"?
>
> It would be dirty. It breaks the unix mentality by integrating too
> much stuff into one program and violates the otherwise clean symmetry
> we are going for in workflow.
>
> Forward the flow is
> gschem -> sch file -> gnetlist -> netlist file -> pcb
> gschem -> sch file -> gsch2pcb -> pcb file -> pcb

PCB nowadays does this in one step via Import Schematics.  It can be set up
to run your old gsh2pcb Make code automagically if you want.  And there is
absolutely no contest between this and the old "run gsh2pcb, restart PCB,
re-import the netlist, and re-run the command file" approach that was enough
to make you hate changes as simple as one refdes or pad shape.

> the reverse should be something like
> pcb -> pcb file -> pcb2netlist -> netlist file -> netlist2gsch -> sch
> file -> gschem
> pcb -> pcb file -> pcb2sch -> sch file -> gschem

So the reverse should, one way or another, be similarly easy from gschem.

Britton