On 2017-07-03 09:58, Dirk Eddelbuettel wrote:
On 2 July 2017 at 23:24, Kirill Müller wrote:
| On 02.07.2017 22:01, Dirk Eddelbuettel wrote:
| > On 2 July 2017 at 21:39, Kirill Müller wrote:
| > | Hi
| > |
| > | An upgrade to R 3.4.1 on Ubuntu removed the default setting of
| > | R_LIBS_USER in /etc/R/Renviron. What's the rationale behind this? Thanks.
| >
| > Pretty much exactly what I told you in person last week :)
| >
| > - idea is to prefer /usr/local/lib/R/site-library/
| > - multi-user more important than per-user
| >
| > Also see https://bugs.debian.org/866768
| >
| > The transition may be too harsh though. I did not consider the
possibility of
| > /usr/local/lib/R/site-library/ *not* being writeable. So what I could do is
| > to re-add the per-user directory as a fall-back after the preferred
| > /usr/local/lib/R/site-library.
| Thanks. The site-library is owned by root/staff on my system, and my
| user isn't member of the staff group (Ubuntu 17.04). I'm not sure how
| this looks on a factory-fresh install, but IMO users should be able to
| just use install.packages().

You should (as the local admin) set up appropriate groups and policies.

In the simplest case, one addgroup would do.

While we are in this discussion, I would like to add that admins should be aware of the fact that adding a user to the "staff" group gives a lot of power and responsibility to that user, such a user can add executables to /usr/local/bin which is per default in the PATH of every user on the system. These binaries may override those in /usr/bin [1]. This is not necessary for R users that just want to install packages system-wide.

Shouldn't we recommend a dedicated group for installing R packages in order to avoid these security implications?

[1] https://wiki.debian.org/SystemGroups

Cheers,

Johannes

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