chshli: Check Shared Libraries

What Is This For?

Use Case 1: Distribution Upgrade

Say you just upgraded from Ubuntu 19.10 to Ubuntu 20.04, as I just did. You may have a number of CRAN packages installed from source in /usr/local/lib/R/site-library. All fine.

But apt and dpkg do not know about them. So it may remove libraries not knowing about these implicit dependencies. Next time you try to load one of the affected packages, it will fail.


R> library(chshli)
Attaching chshli on ubuntu:20.04
R> checkSharedLibs(db="19.10")
Looking at :       libxml2
Looking at : libapt-pkg5.90
Looking at :      libgit2-27

This identifies libgit2 (likely via package git2r), libapt-pkg (likely via RcppApt and libxml2 (likely via xml2). All three can probably be fixed via a simple reinstallation from source.

Use Case 2: RSPM Installations

Say you experiment with RSPM, for example via this Rocker container which you can pull via docker pull rocker/r-rspm:18.04. And you did install.packages("xml2"). Now you can do (after installing this package, of course)


R> library(chshli)
Attaching chshli on ubuntu:18.04
R> checkSharedLibs()
Looking at :       libxml2

and installing (at the system-level, i.e. as root) sudo apt install libxml2 will make your package work. Which is a very nice complement to the nice and fast installation via RSPM.


For now from GitHub via remotes::install_github("eddelbuettel/chshli") or, if you have littler, via installGithub eddelbuettel/chshli.


Dirk Eddelbuettel


GPL (>= 2)

Initially created: Wed May 27 20:40:13 CDT 2020
Last modified: Sat May 30 08:26:39 CDT 2020