"Software for qualitative text analysis (Kuckartz, 2014, <doi:10.4135/9781446288719>). Current version only supports plain text, but it can import PDF highlights if package 'rjpod' (<https://r-forge.r-project.org/projects/rqda/>) is installed.")
added that package and other missing packages with a hard coded dependency for qtk+-2.
* Dealing with certificates and shared libraries
To install software from R it may be you run into certain errors.