On Wed, 2017-04-12 at 16:28 +0200, Christian Dersch wrote: > On 04/12/2017 04:19 PM, Matthew Miller wrote: > > On Wed, Apr 12, 2017 at 02:56:24PM +0200, Christian Dersch wrote: > > > > On Wed, Apr 12, 2017 at 11:08:46AM +0200, Björn 'besser82' > > > > Esser wrote: > > > > > I hope someone can help me with the following question: > > > > > Does recent Fedora's rpm support nested rich-dependencies > > > > > like: > > > > > Supplements: (pkg_a and pkg_b and pkg_c and (pkg_d or > > > > > pkg_e)) > > > > > Is there any way to express a dependency like that? > > > > > > > > Can you give an example of when this might be a good idea? It > > > > seems > > > > easy to go overboard with this without clear benefit. > > > > > > > > > > The example is dnfdragora, a nice new GUI for DNF. It uses libyui > > > abstraction to provide native GUI/TUI for GTK+3, Qt and ncurses. > > > The > > > rich-dependencies ensure that the right libyui bindings get > > > installed. So an Xfce user would get libyui-gtk while an LXQt > > > user > > > would get libyui-qt. > > > > So, in concrete terms: > > > > Supplements: dnf and ____ and ____ and (libyui-gtk or libyui-qt) > > > > ? > > > > What are the blanks? And the meaning is: this shouldn't show up as > > a suggested addition unless those blanks _and_ a libyui of some > > sort > > is already installed (or will be installed)? > > > > Going back to the benefits question: why is this better than > > including > > dnfdragora in the appropriate groups in comps? > > > > > > Maybe I wrote not detailed enough or even a bit wrong, dnfdragora is > the > use-case because it requires libyui and some toolkit binding. But > that > stuff where we want to add that is libyui itself. So that the user > gets > the libyui bindings matching his desktop environment. So libyui-qt > would > supplement libyui and (plasma-desktop or lxqt-session) for example. > Similar with gtk. We want to ensure that the user always gets the > bindings for the toolkit his installed desktops use. So this is a > logic > for libyui, not dnfdragora (which is just the application using it). It's not uncommon to have any or all of GTK, GNOME, and KDE installed at the same time. What libyui-* does dnfdragora use? What happens if both libyui-gtk and libyui-qt are installed, which one gets picked? Dan _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
