[bug#37570] [PATCH] gnu: gtk+: Add libxrandr input.

[bug#37570] [PATCH] gnu: gtk+: Add libxrandr input.

[Ingo Ruhnke]

This fixes multi-monitor issues in XFCE and other Gtk+ apps.

* gnu/packages/gtk.scm: Add libxrandr input.
---
 gnu/packages/gtk.scm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gnu/packages/gtk.scm b/gnu/packages/gtk.scm
index 12972b75df..55c24c774c 100644
--- a/gnu/packages/gtk.scm
+++ b/gnu/packages/gtk.scm
@@ -753,6 +753,7 @@ application suites.")
       ("libxinerama" ,libxinerama)
       ("libxkbcommon" ,libxkbcommon)
       ("libxdamage" ,libxdamage)
+      ("libxrandr" ,libxrandr)
       ("mesa" ,mesa)
       ("pango" ,pango)
       ("wayland" ,wayland)
-- 
2.20.1

[bug#37570] [PATCH] gnu: gtk+: Add libxrandr input.

[Danny Milosavljevic]

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Hmm, gtk+ has a huge number of dependents.

Also, shouldn't gtk+ already have libxrandr in its inputs by virtue of gtk+
inheriting from gtk+-2, which does have it in its inputs?  Why doesn't it
work without the patch?

I suspect that other (xfce) packages actually should require libxrandr in THEIR
inputs, and it's missing there.

Of course adding it to propagated-inputs of gtk+ would "fix" (work around) the
problem, but that's usually not the correct place for it.




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[bug#37570] [PATCH] gnu: gtk+: Add libxrandr input.

[Ingo Ruhnke]

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The issue with Xfce specifically was that "gdk_monitor_get_model()" would
return NULL instead of the proper name and all the multi-monitor handling
would fall apart in turn, that seems like an gtk issue, not an Xfce issue.

As for "propagated-inputs", I put it there because that's where all the
other X11 libraries already are. Don't know exactly why, but it seems to
cause xrandr show up in the pkgconfig file which it wouldn't otherwise:

pkgconfig/gdk-3.0.pc:
Requires.private: ... xrandr ...

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bug#37570: [PATCH] gnu: gtk+: Add libxrandr input.

[Marius Bakke]

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Hello Ingo,

Ingo Ruhnke <grumbel@gmail.com> writes:

> The issue with Xfce specifically was that "gdk_monitor_get_model()" would
> return NULL instead of the proper name and all the multi-monitor handling
> would fall apart in turn, that seems like an gtk issue, not an Xfce issue.
>
> As for "propagated-inputs", I put it there because that's where all the
> other X11 libraries already are. Don't know exactly why, but it seems to
> cause xrandr show up in the pkgconfig file which it wouldn't otherwise:
>
> pkgconfig/gdk-3.0.pc:
> Requires.private: ... xrandr ...

Thank you very much for this debugging work and patch.  Pushed to the
'staging' branch in 52b61e999101724c7e2d341586e9a6150614f208.

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