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From: "Claudio Fabri (clafi AT gmx 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] PCB can no longer imports schematic
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> Sent: Sunday, June 13, 2021 at 7:19 PM
> From: "Roland Lutz" <rlutz AT hedmen DOT org>
> To: "Claudio Fabri (clafi AT gmx DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
> Subject: Re: [geda-user] PCB can no longer imports schematic
>
> On Sun, 13 Jun 2021, Claudio Fabri (clafi AT gmx DOT com) [via 
> geda-user AT delorie DOT com] wrote:
> > OMG! You're my saviour (at least so far ;-)
> >
> > I indeed have an accented character in the current directory name. I ran 
> > gnetlist --list-backends from another directory and I now get a list of 
> > backends.
> 
> Hmm.  I tried that, but that works fine on my machine.
> 
> Do you use a non-UTF8 locale?


Nope, fr_BE.UTF-8


> > ERROR: Could not find backend `pcbfwd' in load path.
> >
> > […]
> >
> > ~# gnetlist --list-backends | grep -i pcb
> >  [PG]  PCB
> >  [PG]  gsch2pcb
> >  [PG]  liquidpcb
> >  [P ]  pcbfwd
> >  [PG]  pcbpins
> >
> > This works: gnetlist -g PCB -o oscillator.net oscillator.sch
> > This doesn't: gnetlist -g pcbfwd -o oscillator.net oscillator.sch
> >
> > I've also inspected the list of files for package pcb (I have version 
> > 4.2.2) and there's also a file named gnet-pcbfwd.scm in 
> > /usr/share/gEDA/scheme/.
> 
> Ah, yes.  There are two variants for most backends: the legacy Guile one 
> (used with the -g option) and the newer Python one (used with -p). 
> Traditionally, the pcbfwd backend was supplied by PCB, so either PCB needs 
> to be installed to the same prefix as gEDA/gaf (so gnetlist finds the 
> gnet-pcbfwd.scm file), or the backend paths need to be adjusted correctly. 
> gEDA/gaf comes with its own Python version of the pcbfwd backend, so using 
> `-p pcbfwd' would work, but AFAIK, PCB doesn't allow changing the import 
> command.
> 
> You can add the directory to which gnet-pcbfwd.scm was installed by PCB to 
> the backend load path by adding the following line to your "gafrc" or 
> "gnetlistrc" file:
> 
>    (scheme-directory "PCBPREFIX/share/gEDA/scheme/")
> 
> where PCBPREFIX needs to replaced with the directory PCB was installed to 
> (like "/usr/local").  Now, "gnetlist --list-backends" should yield
> 
>    [PG]  pcbfwd
> 
> with a G indicating that the Guile version of the backend was found.
> 


I realized I only had to install pcb again to make it work as it installs the *.scm file in gEDA shared directory — I had removed all *.scm files before, as you suggested. After that gnetlist backends lists P and G versions.

Now I get this error:

Redirecting warnings and errors to GUI dialog...
`xorn-netlist' raised an uncaught exception.
This is an error.  Please report it to bug-xorn AT hedmen DOT org

Traceback (most recent call last):
  File "/usr/bin/xorn", line 129, in main
    module.main()
  File "/usr/lib/xorn/netlist.py", line 306, in main
    import gaf.netlist.reportgui
  File "/usr/lib/python2.7/site-packages/gaf/netlist/reportgui.py", line 23, in <module>
    import collections, cStringIO, gtk, pango, re, traceback
ImportError: No module named gtk

I tried to install pygtk but the system won't as there seems to be no package named "libglade" available, which is a required dependency.

However...

I could make pcb work again by (I suppose) preloading the netlist (which has to be generated before hand) and importing the schematics. Now I get all the components placed and ratsnest properly.

I think I can figure out how to sort out the rest of my issues but so far gschem/pcb/gnetlist all seem to work again.

Thanks a lot for your help.

Claudio

> Roland
>