Prework

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Proposal

I found the setup presented in https://ulhpc-tutorials.readthedocs.io/en/latest/maths/R/PS10_targets.html#18 very useful (build script running tar_make() recognised in RStudio's build pane). I wonder if the package itself could facilitate this setup?

What I think this would mean => a possible way of implementing it

• make it easier to create a build script => provide a helper function analogous to tar_script() + make the script executable on UNIX machines (not sure if anything like that is required on Windows)
• integrate with RStudio build pane => either by providing a hint to the user in a message, or by updating the Rproj file (directly or perhaps {rstudioapi} can help)
• provide an indication at the end of tar_make()'s output that the pipeline has finished running (similar to package build/test/document commands). There is a summary-type line when all targets are skipped ("Already up to date") but not when some run; for both cases a message that stands out more might be useful.

The last bit would be worthwhile and I expect low-cost regardless of what you think of the previous two - happy to submit as a separate issue if you wish.