Functions to get path to and open .Renviron file that contains
definitions of R environment variables.
Compared to usethis::edit_r_environ(), open_r_environ() does not create
file if it does not exist.
get_path_r_environ(scope = c("user", "project"))
open_r_environ()(character) The scope of file. One of "user" or "project".
get_path_r_environ()
#> /home/runner/.Renviron