Hello The RStudio application, a popular IDE-like tool for programming in R, is not to my knowledge packaged in the mainstream Debian repositories. The makers of RStudio, however, provide a package which can be downloaded from their website for installation in Debian.
The most recent package they provide is aiming at Stretch -- they don't seem to have produced a Buster version yet. The Stretch-facing package installs into Buster without error, but then fails when you try to launch it because it has a dependency on libssl1.0.2 and Buster uses libssl1.1 (and presumably this dependency isn't recorded at the package level) If one downloads libssl1.0.2 from the Debian package pool and installs it, it appears to install OK and RStudio starts working -- but, what damage / compromise is that likely to have done to the system? Is it OK to do this? Should one take other steps to prevent libssl1.0.2 being used by other applications? Thanks Mark