In c852d897551f514de95c224fa79e748f48808068, try `guix build
materialdecoration` and failed.

In file included from /gnu/store/zzxq7q3fn6pnn1jahyzcf85hm8wakk1x-qtwayland-5.15.2/include/qt5/QtWaylandClient/5.15.2/QtWaylandClient/private/qwaylandwindow_p.h:66:0,
                 from /tmp/guix-build-materialdecoration-1.1.0.drv-0/source/src/plugins/decorations/material/materialdecoration.h:44,
                 from /tmp/guix-build-materialdecoration-1.1.0.drv-0/build/src/plugins/decorations/material/materialdecoration_autogen/EWIEGA46WW/moc_materialdecoration.cpp:10,
                 from /tmp/guix-build-materialdecoration-1.1.0.drv-0/build/src/plugins/decorations/material/materialdecoration_autogen/mocs_compilation.cpp:2:
/gnu/store/zzxq7q3fn6pnn1jahyzcf85hm8wakk1x-qtwayland-5.15.2/include/qt5/QtWaylandClient/5.15.2/QtWaylandClient/private/qwaylanddisplay_p.h:71:10: fatal error: QtXkbCommonSupport/private/qxkbcommon_p.h: No such file or directory
 #include <QtXkbCommonSupport/private/qxkbcommon_p.h>
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [src/plugins/decorations/material/CMakeFiles/materialdecoration.dir/build.make:66: src/plugins/decorations/material/CMakeFiles/materialdecoration.dir/materialdecoration_autogen/mocs_compilation.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
In file included from /gnu/store/zzxq7q3fn6pnn1jahyzcf85hm8wakk1x-qtwayland-5.15.2/include/qt5/QtWaylandClient/5.15.2/QtWaylandClient/private/qwaylandwindow_p.h:66:0,
                 from /tmp/guix-build-materialdecoration-1.1.0.drv-0/source/src/plugins/decorations/material/materialdecoration.h:44,
                 from /tmp/guix-build-materialdecoration-1.1.0.drv-0/source/src/plugins/decorations/material/plugin.cpp:24:
/gnu/store/zzxq7q3fn6pnn1jahyzcf85hm8wakk1x-qtwayland-5.15.2/include/qt5/QtWaylandClient/5.15.2/QtWaylandClient/private/qwaylanddisplay_p.h:71:10: fatal error: QtXkbCommonSupport/private/qxkbcommon_p.h: No such file or directory
 #include <QtXkbCommonSupport/private/qxkbcommon_p.h>
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [src/plugins/decorations/material/CMakeFiles/materialdecoration.dir/build.make:92: src/plugins/decorations/material/CMakeFiles/materialdecoration.dir/plugin.cpp.o] Error 1
In file included from /gnu/store/zzxq7q3fn6pnn1jahyzcf85hm8wakk1x-qtwayland-5.15.2/include/qt5/QtWaylandClient/5.15.2/QtWaylandClient/private/qwaylandwindow_p.h:66:0,
                 from /tmp/guix-build-materialdecoration-1.1.0.drv-0/source/src/plugins/decorations/material/materialdecoration.h:44,
                 from /tmp/guix-build-materialdecoration-1.1.0.drv-0/source/src/plugins/decorations/material/materialdecoration.cpp:35:
/gnu/store/zzxq7q3fn6pnn1jahyzcf85hm8wakk1x-qtwayland-5.15.2/include/qt5/QtWaylandClient/5.15.2/QtWaylandClient/private/qwaylanddisplay_p.h:71:10: fatal error: QtXkbCommonSupport/private/qxkbcommon_p.h: No such file or directory
 #include <QtXkbCommonSupport/private/qxkbcommon_p.h>
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.


A related issue is: https://github.com/lirios/materialdecoration/issues/11

Update materialdecoration to
https://github.com/lirios/materialdecoration/commit/d4208780606333499bbf5737af1a6a8ac83bd29e
may fix this issue, but it requires cmake-shared newer than currently we
have.

Full build log: