{styler} removed?

[lorenzwalthert]

Hi, thanks for this cool package. I saw you removed {styler} in 2f86db9.

• As the maintainer of {styler}, I am curious to learn more about the reasons why you removed it.
• As a user, I can't use {styler} anymore. This seems like a hard cut. Is there a way to optionally use styler, e.g. governed by an environment variable R option? Then, people could either opt in or opt out of styling.

[pvictor]

Hello,
Yes {styler} is a very good package, I use it regularly. The problem here, reported by some users, was with the R cache folder, where it blocked the ggplot2 code generated to be displayed in the addin and further use of the addin itself. For new users this is very confusing, so I chose to use a minimal formating of the code in the addin and to recommend to use {styler} after that in R scripts.

In a future realease, I want to integrate a feature to display history of code generated (so potentially more code), maybe I'll use {styler} then, it will be more robust than my current solution.
And I kinda like Garrick style (https://github.com/gadenbuie/grkstyle), so I've to look closer how all this works.

Victor

[lorenzwalthert]

Thanks for the explanation. You are not the first to explore this problem unfortunately. A simple workaround to disable the prompt is to use a temporary cache location (instead of one persisting over multiple sessions) by setting an environment variable. It's described here:

https://styler.r-lib.org/reference/caching.html#non-interactive-setup

Bottom line for you:

# temporary set env variable for call to styler.
withr::with_envvar(
  R_CACHE_ROOTPATH = file.path(tempdir(), 'R.cache.esquisse'), 
  styler::style_text(...)
)

Note that this does not add a new dependency to your probject because {withr} is already an indirect dependency (via {shiny} and other packages you import).

Also, maybe once HenrikBengtsson/R.cache#43 is merged and CRAN-released, you could do this:

# temporary set env variable for call to styler.
withr::with_envvar(
  R_CACHE_ROOTPATH_ASK = FALSE 
  styler::style_text(...)
)

If you want to use Garrick over tidyverse style, note that the {R.cache} behavior is the same, because Garrick provides only a style guide (=rules for styling), {styler} provides not just the tidyverse style guide but also the mechanism to format code according to arbitrary style guides.

Happy to assist if you have further questions.

[HenrikBengtsson]

See my HenrikBengtsson/R.cache#43 (comment) comment; per CRAN policies R.cache (>= 0.15.0) no longer have to ask for permission to create it's cache folders as long as they're in a standard location, so there should be no prompt.

[lorenzwalthert]

Thanks @HenrikBengtsson. I'll add a minimum version requirement for R.cache in r-lib/styler#819. @pvictor this means once this new styler version is released (assuming you want to add {styler} again), just require this minimal version and blocking prompt problem should be resolved.

[lorenzwalthert]

@pvictor {styler} 1.5.1 is released, where the minimal version requirement for {R.cache} is included, so you could just require styler >= 1.5.1 in your package to get rid of the problems.

[lorenzwalthert]

@pvictor, as stated above, the problems related to {styler} are now resolved. Would you consider re-adding it?

[pvictor]

Thanks for the heads up @lorenzwalthert , I'll look into that