For some reason the gir-1.0 directory is installed into a subdirectory ${DESTDIR}/usr/${XBPS_CROSS_BASE}/usr/share/gir-1.0 while it is expected to be at ${DESTDIR}/usr/share/gir-1.0; move it there until someone has a better fix.
For some reason the gir-1.0 directory is installed into a subdirectory ${DESTDIR}/usr/${XBPS_CROSS_BASE}/usr/share/gir-1.0 while it is expected to be at ${DESTDIR}/usr/share/gir-1.0; move it there until someone has a better fix.