is installed into sbox as supportive package not available in the environment (e.g. for R without RSuite) devtools could not be loaded for project package building because only packages from sbox there visible while loading devtools. Now devtools are loaded with sbox & libs visibility.
external package is loadable in project environment. If not it gets installed.
installed packages for Rver. devtools is installed into sbox if not found for Rver required by the project.
zipping and packing.
R version. MRAN has packages built under 3.3.2 presented as built for 3.4.
is detected out of PARAMETERS/ZipVersion and packages version if format does not exist.
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