--- running R CMD build for QPress (project QPress)
* checking for file 'QPress/DESCRIPTION' ... OK
* preparing 'QPress':
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
-----------------------------------
ERROR: dependency 'XML' is not available for package 'QPress'
* removing '/tmp/RtmpzYz0d3/Rinst1ca787480d211/QPress'
-----------------------------------
ERROR: package installation failed
*** WARNING: expected tar ball QPress_0.22.tar.gz does not exist!
QPress is not a package in QPress_0.22.tar.gz, skipping R CMD check