[R-pkg-devel] Testing on old R versions

[Dirk Eddelbuettel]

The Rocker Project provides both rocker/r-ver (with package snapshotting) as
well as the (much smaller, just R) rocker/r-base images which are then passed
on to the Docker team to become the official r-base image.

These go back to 3.1.3 with (almost if not all) interim releases, see

   https://hub.docker.com/_/r-base?tab=tags

and just use, say, 'docker pull r-base:3.2.0'

(Because they are available as these 'r-base' I initially didn't initially
tag them at the rocker/r-base side so there tags only started at 3.6.3.)

For the use case of testing rgl you may need to find the appropriate opengl
libraries for the particular release. These r-base images are all Debian
based, and Debian has a handy 'time machine' feature in snapshot.debian.org
which also lets you pick dates to install .deb binaries from. That should
make rgl testing easy in case you need older versions of the build
dependencies.

Dirk

-- 
https://dirk.eddelbuettel.com | @eddelbuettel | edd using debian.org