[R-pkg-devel] Failing to write config file in linux

[Jeff Newmiller]

Installed packages may not be modified because they are permitted to be installed with read-only access. You have no option to proceed in this direction.

Configuration files are normally stored in the user's working directory. Dotfiles are a common convention in *nix operating systems, but in Windows the conventions are a bit different. The most general solution is to allow the user to specify an R option in .Rprofile [1], but you can setup defaults depending on the user's OS to back that up in case they don't actually take the steps to do that.

[1] https://stat.ethz.ch/R-manual/R-devel/library/base/html/options.html

On October 22, 2023 9:52:50 AM PDT, "Keshav, Krishna" <kkeshav using ufl.edu> wrote:
>Hi,
>
>My package is failing on linux based systems because of an attempt to write in a location of package. One of the core features that we would like user to have is to modify the values in the config file, for which package has a function for user to provide modified config. In future, they should be able to provide individual parameters for the config for which also we will be writing to config in package directory /inst/ so that it can later be fetched. I understand that policy doesn’t allow writing to home directory. Is there a workaround for this? Or what could be other potential solutions to explore.
>
>Snippet –
>https://github.com/GarrettLab/CroplandConnectivity/blob/923a4a0ca4a0ce8376068ee80986df228ea21d80/geohabnet/R/params.R#L57
>
>Error –
>     ── Failure ('test-parameters.R:38:3'): Test 6: Test to set new parameters.yaml ──
>     Expected `set_parameters(new_param_file)` to run without any conditions.
>     ℹ Actually got a <simpleWarning> with text:
>     cannot create file '/home/hornik/tmp/R.check/r-release-gcc/Work/build/Packages/geohabnet/parameters.yaml', reason 'Read-only file system'
>
>
>Best Regards,
>Krishna Keshav
>
>
>	[[alternative HTML version deleted]]
>
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