Re: unbound variable

[kiasoc5 <kiasoc5@disroot.org>]

On 11/2/22 09:48, Felix Lechner via wrote:
> Hi Gottfried,
> 
> On Wed, Nov 2, 2022 at 5:50 AM Gottfried <gottfried@posteo.de> wrote:
>>
>> If e.g. I have a different printer (e.g. from an other company), and I
>> want to install it,
> 
> That is a CUPS question. As you can imagine, there are lots of
> printers. I usually look at which format the printer speaks, and how
> it likes to communicate. Basic formats are PCL and Postscript, with
> PCL being faster but less cool. My favorite communication for
> networked printers is Port 9100, which I think used to be called
> JetDirect, but there are others.
> 
> There is also USB (and parallel, if your printer is really old).
> 
> My own printer is reasonably well supported by CUPS alone, although I
> might find a more capable PPD via hplip. RIght now, it's not worth my
> time to go further. You, too, may be looking at a compromise.
> 
> For printers with their own data format, you may need Gutenprint,
> which I believe is not packaged in Guix. More importantly, I believe
> there are significant hurdles to packaging because there are so many
> paths to replace.
> 
> Hope that helps.
> 
> Kind regards
> Felix Lechner
> 

You might not need a driver, if your printer is new enough. Printers 
made after 2010 should support IPP Everywhere, which prints without drivers.

https://www.pwg.org/ipp/everywhere.html