Other fields

Version where pkg is in lifecycle / how it’s evolving (Ch21)
LazyData: TRUE if pkg has data for users (won’t need data())
Encoding: UTF-8 by default (most common)
Collate controls the order in which R files are sourced (may be an issue when S4 classes are used)
VignetteBuilder lists what the pkg needs as a vignette engine (Ch17)
NeedsCompilation: no if only R code and no C/C++/Fortran/Rust/JS code
SystemRequirements dependencies external to R in plain text for human eyes

SystemRequirements: C++17
SystemRequirements: GNU make
SystemRequirements: TensorFlow (https://www.tensorflow.org/)