prompt=TRUE does nothing

[nick-youngblut]

renv::install(..., prompt=TRUE) does nothing. renv just installs all packages without any confirmation. I'm surprised "install regardless of the version changes to existing packages" is the default in R. That's the opposite of conda, which defaults to prompting the user after listing all proposed changes to the existing environment. It would be great to have the same with renv.

> sessionInfo()
R version 4.0.3 (2020-10-10)
Platform: x86_64-conda-linux-gnu (64-bit)
Running under: Ubuntu 18.04.5 LTS

Matrix products: default
BLAS/LAPACK: /ebio/abt3_projects/Georg_animal_feces/envs/function/lib/libopenblasp-r0.3.10.so

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
 [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C
 [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] renv_0.12.3

loaded via a namespace (and not attached):
[1] compiler_4.0.3 tools_4.0.3

[hadley]

prompt only has any effect if the preflight checks fail, i.e. if any of the packages have an unknown source or the library isn't writeable.

@kevinushey do you think it should behave similarly to restore() here? Or is this something we want to leave for the pak work?

[kevinushey]

IMHO we should be prompting before installation (as restore() does).