plasma-workspace FTBFS with appstream 0.11.8-1

[Rik Mills]

plasma-workspace fails to build from source with with appstream 0.11.8-1 synced from debian

https://launchpad.net/ubuntu/+source/plasma-workspace/4:5.11.5-0ubuntu2

[ 49%] Linking CXX shared module appstreamrunner.so
cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/runners/appstream && /usr/bin/cmake -E cmake_link_script CMakeFiles/appstreamrunner.dir/link.txt --verbose=1
/usr/bin/c++ -fPIC -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++0x -fno-operator-names -fno-exceptions -Wall -Wextra -Wcast-align -Wchar-subscripts -Wformat-security -Wno-long-long -Wpointer-arith -Wundef -Wnon-virtual-dtor -Woverloaded-virtual -Werror=return-type -Wvla -Wdate-time -Wl,--no-undefined -Wl,--fatal-warnings -Wl,--enable-new-dtags -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,--as-needed -Wl,--no-undefined -shared -o appstreamrunner.so CMakeFiles/appstreamrunner.dir/appstreamrunner.cpp.o CMakeFiles/appstreamrunner.dir/appstreamrunner_autogen/mocs_compilation.cpp.o /usr/lib/x86_64-linux-gnu/libKF5Runner.so.5.41.0 AppStreamQt-NOTFOUND /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5.41.0 /usr/lib/x86_64-linux-gnu/libKF5Package.so.5.41.0 /usr/lib/x86_64-linux-gnu/libKF5Service.so.5.41.0 /usr/lib/x86_64-linux-gnu/libKF5I18n.so.5.41.0 /usr/lib/x86_64-linux-gnu/libKF5ConfigCore.so.5.41.0 /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5.41.0 /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.9.3 /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.9.3
c++: error: AppStreamQt-NOTFOUND: No such file or directory

(initially failed on just s390x, as that build did not get unblocked for meltdown fixes until after 0.11.8-1 was synced. Above rebuild confirmed failure then on all architectures)

Seems other packages are also likely to fail if/when there are new builds

e.g. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=888144 for frameworkintegration

I would note that doing test builds on Kubuntu CI, both upstream 5.12 beta and master branches of plasma-workspace also fail to build in the same manner.