Change of paradigm. renv now needs to be explicitly loaded.

Automatic loading was generating too many errors due to conflicting libraries. An "unable to unloadNamespace" error, similar to this one https://stackoverflow.com/questions/32771517/package-cannot-be-unloaded-in-r-cannot-install-package, while installing corescf finally did it for me.
1 job for master
Status Job ID Name Coverage
  Test
canceled test #5048
docker