[R-sig-Debian] Installing R 4.1.2 doesn't work as it did a week ago

[Dirk Eddelbuettel]

Chad,

I think you have a fundamental disconnect.  "In general" both at CRAN and in
distros like Ubuntu and Debian you just get rolling releases that will
feature the most current version of packages (with the exception of release
snapshot time at which point a demarcation line is drawn).

So you generally cannot assume you can just randomly impose version constraint.
There are some expections (as the date-snapshots by first MRAN and now RSPM),
but they are generally _not_ integrated with apt.

In short, methinks you cannot assume you can just run a Dockerfile today as
if were a random day you liked between R 4.1.2 and 4.1.3. The repos, and
package management software, are designed for that use case.

Hope this helps,  Dirk

-- 
dirk.eddelbuettel.com | @eddelbuettel | edd using debian.org