Should pin_download.board_local make a copy?

[hadley]

Currently pin_download() returns a path directly to the stored data, so it could potentially be modified:

library(pins)

board <- board_folder("~/desktop/pins")
board %>% pin_write(mtcars, "mtcars")
#> Guessing `type = 'rds'`
#> Creating new version '2f642ce498ec2413'
board %>% pin_download("mtcars")
#> [1] "~/desktop/pins/mtcars/2f642ce498ec2413/mtcars.rds"

^{Created on 2021-08-04 by the reprex package (v2.0.0)}

@jcheng5 do you have any sense of whether or not this is a good idea?

[hadley]

Probably too expensive; maybe try Sys.chmod(path, "0444"). Not sure if that's ok cross-platform. Initial experiments suggest that it's ok, but should confirm with some tests.

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