Running Sky (tel.red) on Fedora 25

On Fedora 25, the Sky Skype for Business client crashes on launch inside its bundled Qt 5 runtime:

Program received signal SIGABRT, Aborted.
0x00007ffff112692f in raise () from /lib64/libc.so.6
(gdb) bt
#0  0x00007ffff112692f in raise () at /lib64/libc.so.6
#1  0x00007ffff112852a in abort () at /lib64/libc.so.6
#2  0x00007ffff200dcb1 in  () at /usr/lib/sky/lib/libQt5Core.so.5
#3  0x00007ffff24ee835 in QGuiApplicationPrivate::createPlatformIntegration() () at /usr/lib/sky/lib/libQt5Gui.so.5
#4  0x00007ffff24ee955 in QGuiApplicationPrivate::createEventDispatcher() () at /usr/lib/sky/lib/libQt5Gui.so.5
#5  0x00007ffff21cea64 in QCoreApplicationPrivate::init() () at /usr/lib/sky/lib/libQt5Core.so.5
#6  0x00007ffff24f2340 in QGuiApplicationPrivate::init() () at /usr/lib/sky/lib/libQt5Gui.so.5
#7  0x00007ffff2be62b9 in QApplicationPrivate::init() () at /usr/lib/sky/lib/libQt5Widgets.so.5
#8  0x0000000000434e41 in main ()

The issue stems from incompatible bundled Qt libraries. A reliable workaround is to force Sky to use Fedora’s system-provided qt5 packages:

# Check version
rpm -q sky

# Move bundled Qt5 libraries out of the way
cd /usr/lib/sky
sudo mkdir -p old
sudo mv libQt5* old/

# Launch Sky
sky