I know that USE=cups is already enabled by the desktop profiles, but I use hardened on my desktop and have not had USE=cups in my make.conf until now. Unfortunately, this means that KDE's okular happily ignores the duplex settings given in the prefs dialog when printing. Arguably, anyone interested in the qtgui *is* on a desktop or at least interested in the desktop functionality. I therefore claim that enabling the desktop-related features by default makes sense. Could you please enable the cups USE flag by default?
I do not think that this is reasonable change. >Arguably, anyone interested in the qtgui *is* on a desktop or at least interested in the desktop functionality. There are some edge cases when this might not be useful(honestly, your case is one of them, just from different side). So, i would rather prefer to close this as WONTFIX, but if other Qt team members have different opinion on this - let's listen to them...
(In reply to Sergey Popov from comment #1) > There are some edge cases when this might not be useful(honestly, your case > is one of them, just from different side). I do not understand this, sorry -- could you please rephrase it a bit? This is simply about changing the default, and my claim is "a user needs QtGui -> very likely they expect printing support, too". In other words, I claim that the majority of users who needs Qt's GUI also want to print at some point in time. If the IUSE is flipped, then the users who want to have GUI but no printing have to change one use flag -- I do believe that it is completely acceptable. No unwanted dependencies are forced on them in any way. And to elaborate a bit -- USE=-cups does not result in a simple-to-detect breakage like not being able to print at all. Instead, the change of behavior is more subtle, as in features not being available at runtime -- for me, it manifested as KDE's print dialog ignoring the duplex settings without any hint of what's going on, even though the settings were available to be changed. Given that there is no easy way to tell whether Qt was built with CUPS support programatically, applications like Okular resort to nasty hacks (see lines 239 - 246 in http://quickgit.kde.org/?p=okular.git&a=blob&h=55977a1bad711f9f1dcc38671a25aea5c10ec4c2&hb=1633066d475e3d6997bd5a92a1945e02cd4cad74&f=core/fileprinter.cpp) and even still the GUI *does* offer these options to the user. To be honest with you, I sent two patches to Okular before I found out that the culprit is the lack of USE=cups in QtGui...
(In reply to Jan Kundrát from comment #2) > (In reply to Sergey Popov from comment #1) > > There are some edge cases when this might not be useful(honestly, your case > > is one of them, just from different side). > > I do not understand this, sorry -- could you please rephrase it a bit? > > This is simply about changing the default, and my claim is "a user needs > QtGui -> very likely they expect printing support, too". In other words, I > claim that the majority of users who needs Qt's GUI also want to print at > some point in time. Yeah, my grammar sucks and i know that. In short, i think that "A user needs > QtGui -> very likely they expect printing support, too" is not true. Printing is NOT the basic thing that you have on desktop systems. Do not get me wrong, if you want it - you enable 'cups' USE-flag(globally or per package). I(and some Gentoo users that i know) use default(not desktop) profile on my desktops and i am very happy with this setup - it saves me time for disabling unneded cruft. I have USE="cups" globally at work(for obvious reasons) and USE="-cups" - at home(i have no suitable printer for this). And i am really sure that this is not rare case. And qtgui can be used not only in desktop environments. Believe me, i saw console programs, that requires qtgui explicitly(very bad design, i know).
And, to be honest, i think that you are accelerating Okular failure(not having warning on supported feature) on higher level(toolkit one) without any real need.
I'm against the proposal. First, you already said that the desktop profile enables cups, so your point about desktop users is moot. Second, USE=cups pulls quite a few dependencies, and I disagree with your statement that desktop implies printing. Third, you can "solve" the okular issue with a qtgui[cups] USE dep. WONTFIX IMO
