Re: [Gimp-print-devel] OSX support (Was Re: CITIZEN photo printers)

[Solomon P. <pi...@sh...>]

On Fri, Feb 16, 2018 at 11:59:02AM -0500, fo...@wa... wrote:
> There were some hiccups in getting all the binaries signed properly in 
> High Sierra but that has been accomplished. It’s rather straight 
> forward and I would be happy to make a write-up if you all want to 
> update the documentation on this. (Current documentation for OS X 
> packaging is not up to date).

I'm assuming you have to sign it with a propr Apple Developer key?

And I'm sure I speak for everyone here when I say that any documentation 
updates would be welcomed.  :)

> The only stumble that I have found to making vendor specific OS X 
> variants is this: I have found NO way to have multiple variants of 
> gutenprint in /usr/libexec/cups/driver.  This is the part of the 
> system that populates the list of available “gutenprint printer 
> drivers” when you go to sys prefs and then hit the + button and then 
> calls the appropriate binary to make the ppd and install the printer. 
> The only way to distribute a Gutenprint-derived independant driver is 
> to pre-build the PPDs and place in 
> >Library>Printers>PPDs>Contents>Resources>. That’s the only sticking 
> point that I see to this.

Some of that is Gutenprint's fault; it's not intended to be 
parallel-installable across point releases, and I think the "driver" 
name is hardcoded to be 'gutenprint'.  It may be worth looking into 
allowing all executable names (and dependent data directories) to be 
changed at compile-time.  Perhaps a filename prefix not unlike how gcc 
cross compilers are set up?

> The other thing that I think is do-able (OS X specific) is the ability 
> to have ColorSync select an output ICC based on the Mediatype chosen. 
> That said, none of that programming has been done in genppd.c There is 
> only the generics (sRGB, etc) that have been defined for OS X.

Is this a generic feature that allows arbitrary options to be passed
to ColorSync, or is it limited to a specific enumerated set?  I wonder 
if colord on Linux supports something similar.

(Traditionally, one will set up multiple queues to the same backend
 device, one for each setting combination, and associate a unique ICC 
 profile to each queue..)

 - Solomon
-- 
Solomon Peachy			       pizza at shaftnet dot org
Coconut Creek, FL                          ^^ (email/xmpp) ^^
Quidquid latine dictum sit, altum videtur.