When I started the R4PI project to deliver up-to-date versions of R and a number of popular packages for the Raspberry Pi family of computers four and half years ago, it was just a collection of R and BASH scripts. Over the years, it’s evolved and grown and whilst the individual software components do a decent enough job of documenting themselves for me, it’s not easy for anyone else to peak behind the curtain and see how it all fits together, so this is my attempt at “documenting” the pipeline in the hopes that it might be interesting or useful to …