Optimize `renv` cache behavior for CI

[jasonratcliff]

The rocker geospatial docker image contains a site-specific library with a number of pre-installed R packages in addition to the system library dependencies (see also: archived geospatial toolkit).

• Review Spatial Task View

• Setup R environment dependencies

Related

• Continuous Integration #46

  • Test GitHub Actions #85

Notes

Location of site-specific library set by install_R_source.sh:

## Fix library path
echo "R_LIBS=\${R_LIBS-'${R_HOME}/site-library:${R_HOME}/library'}" >>"${R_HOME}/etc/Renviron.site"

$ cat ${R_HOME}/etc/Renviron.site
R_LIBS=${R_LIBS-'/usr/local/lib/R/site-library:/usr/local/lib/R/library'}
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/texlive/bin/linux:/usr/local/texlive/bin/linux/

Get paths in R session, without call to renv::activate():

> .Library.site
[1] "/usr/local/lib/R/site-library"
> .Library
[1] "/usr/local/lib/R/library"
> .libPaths()
[1] "/usr/local/lib/R/site-library" "/usr/local/lib/R/library"  

Docker Image

• https://github.com/rocker-org/rocker-versioned2/blob/master/dockerfiles/geospatial_4.3.0.Dockerfile
  • https://github.com/rocker-org/rocker-versioned2/blob/master/scripts/install_geospatial.sh

renv

• Path Customization

> names(renv::paths)
[1] "root"     "library"  "lockfile" "settings" "cache"    "sandbox"