Alexander,

Alexander Asteroth 写道：
>> - Which PPD file did you import?  Was it[0]?  If not, try that.
>
> I have no idea what it[0] is.

This is about to become amusingly confusing, because I'm in turn 
not sure what ‘it[0]’ refers to above.

If you mean the ‘[0]’: there was a link at the bottom of my mail 
to the PPD I tried.

If you mean the file itself: it's what this form[1] (another link 
below :-) produces from selecting your printer model and clicking 
‘Generate PPD file’.

I did not inspect how that site works, but as modern CUPS 
autogenerates .ppd files from .drv files, I expect it to do the 
same.

> The ppd I used before is from the Samsung uld-package

That's the binary-only (and hence unsupportable) .deb, right?

>> - Why remove foomatic-filters from the default CUPS extensions 
>> list?
>
> I was not aware that adding filters to the service description 
> overrides
> the filters default values. I thought it just add's them and 
> somewhere
> it was remommended adding the hplib-minimal filters, and in my
> helplessness I tried everything ;-)

Wait, so it didn't work with the default list?  :-(

Also, was it not clear from the Guix manual that the default list 
should include all viable drivers?  If you have any suggestions to 
improve the wording, please let me know!

> Anyway, I gave other Samsung drivers a try and with the 
> SCX-5330N I found a
> driver that also seems to work with my SCX-4729.

Great!  All's well that ends well.

I find it strange that the foomatic package doesn't offer you 
exact printer model when it probably supports it, but that's not 
really a Guix bug, I think.

Happy printing,

T G-R

[0]: 
https://openprinting.org/ppd-o-matic.php?driver=pxlmono&printer=Samsung-SCX-472x&.submit=Generate+PPD+file&show=1&.cgifields=show&.cgifields=shortgui
[1]: https://www.openprinting.org/driver/pxlmono